Lagodekhi Protected Areas (LPA) in the extreme north-eastern part of Georgia at the southern slopes of the Caucasus and with altitudes from 590 to 3500 m, is one of the world's best-preserved areas with diversity of natural landscapes. The project of developing a TreeTop Trail as a new touristic product is to attract more visitors and, considering the transboundary potential of the LPA, make it one of the most attractive destinations, to be included in future transboundary ecotourism products.

The concept emphasizes the forest as the protagonist and proposes a minimalistic design, a circular shaped trail that gradually ascends towads the tree canopies. Additional program is added in order to enhance the experience of forest. This includes a watch tower, a dome, a large net, a cave, and multiple platforms.

The Henschel Quarter opens up hertitage sites to the public and secures them through flexible use. It is integrated into the city and is accessible to everyone. The aim is to preserve the historic industrial culture and make it usable. Listed buildings are carefully restored and remain part of the public space. The industrial past will be preserved through minimally invasive interventions, while new and predominantly commercial uses will revitalize the old halls. The open space will be transformed, historical traces such as tracks and crane runways will be preserved, supplemented by green spaces and playgrounds. In terms of urban planning, small-scale building typologies create the transition to adjacent districts, while high points mark important locations. Connections for pedestrians and cyclists create a continuous and close-knit network in the district. The existing buildings will be supplemented by new buildings whose design is based on the industrial character. Historic parts of the buildings will be retained and partially integrated into the outdoor space. In the center of the quarter, a "hall for all" with restaurants, culture and sports will be created, surrounded by creative and commercial uses.

The Henschel Quarter focuses on sustainability by preserving the existing buildings and reusing gray energy. Demolition materials are recycled on site and new buildings are constructed from sustainable materials. Renewable energies such as solar panels and geothermal energy supply the quarter, while open spaces improve the microclimate, and the combination of history, commercial, cultural and innovative offerings makes the Henschel Quarter a vibrant part of Kassel.

As part of the CEWI-cooperation, Cityförster is developing an implementation concept that shows how the sustainable and careful renovation of real estate can be implemented in the DJH Landesverband Baden-Württemberg e.V.

The mission for DJH Lochen is to be a flagship project for circularity, sustainability and sufficiency. This concept is translated to the offer of the youth hostel, and the architectural design and planning. Following the didactic focus of DJH Baden-Württemberg, the hostel should offer its guests an educational experience for sustainable awareness. This means programs with sustainability themes, active outdoor experiences, and workshops with local resources. These themes are also represented in the architectural concept. The main target groups are school groups, leisure (sports) groups, conference groups, and individual travelers like hikers, cyclists and retreat participants.

The theme of sufficiency has guided the hostel to rethink its offer of rooms: smaller rooms to emphasize the outdoor experience, and the development of a summer house for the peak season. This summer house provides extra guest rooms in the warmer months, making a low-tech building without heating or cooling possible. The summer house transforms the old garage by extending it with a new floor on top. Upon arrival, the summer house is the eyecatcher of the circularity concept.

The main goal of the renovation is to restructure the rooms and meet today's requirements. Because the exterior was renovated in 1982, the focus of the renovation is on the space plan and installations. This means a minimal renovation is sufficient. Where possible, building components are harvested on site or in the region, and repurposed in the summer house and the youth hostel. Where larger quantities of materials are needed, materials based on recycled resources and granulated raw materials are applied, for example recycled rubber, concrete and repurposed wood shingles.

The beautiful location of DJH Lochen next tot the Lochenpass creates an inspiring natural environment in the forest on the hills. The existing outdoor facilities are upgraded, and new functionalities are added to extend the possibilities for outdoor activities. The new multifunctional outdoor spaces contribute to the sustainable outdoor experience of DJH Lochen.

Urban development
The Change Factory combines flexible uses and high-quality open spaces along the river Inde and Indestraße. A four-storey high building with a roof terrace marks the main entrance and lends urban presence. The three staggered building volumes form a work yard to the north and terraces to the south for working and relaxing on the Inde. To the north, the buildings are stepped down towards the cemetery. To the east is a space-efficient mobility hub, which is directly connected to the main entrance via the internal Innovation Mile.

Open space
The Change Factory forms an identity-forming backbone of the public space along the Inde. A spacious forecourt with dancing trees and seating invites people to linger. To the south, open terraces will be created with a view of the Inde. Trees that are compatible with the urban climate and the integration of the local water balance into natural circulation systems ensure sustainability. Green roofs, vegetation and riverbank areas delay runoff and improve the microclimate.

Organization of use
The building is based on a modular construction grid of 8.1m x 8.1m x 4m or 5m on the first floor. All usage units are flexibly adaptable. The Innovation Mile connects the floors via a spacious staircase and promotes interaction. Upper floors offer communication areas, the first floor presentation areas. A café at the main entrance creates an inviting entrance. Space-intensive uses and laboratories are located on the first floor, while offices on the upper floors offer units from 30m² to over 1500m² and can also be divided and combined.

The proposal for the revitalization of Königstrasse 1ab is based on the following 5 guiding design themes:

Development of a building structure that completes the ensemble of the hotel and Königsstraße 1c, which incorporates heights and gradations, creates addresses and forms the prelude to Königstraße through its orientation towards the train station.

Creation of lively, green passages with small-scale retail, gastronomy and areas for culture and events in the interior of the ensemble and a generous setback on Königstraße to provide more space for planting and passers-by.

Enabling maximum exchange between inside and outside through diverse and generous entrances and transparent façades.

Creating modern retail, office and restaurant layouts that can react flexibly to changing future requirements.

Reuse of the existing load-bearing structure and individual components to minimize energy consumption and thus reduce CO2 emissions.

The primary focus of our project entails the resilient and environmentally conscious transformation of two Plattenbau buildings situated on the outskirts of Erfurt, with the objective of establishing a model that can be universally applied throughout the entire neighborhood. The volumes of the two buildings are enveloped by a prefabricated modular grid system, thereby creating an aesthetically refined and low-maintenance design. This approach facilitates not only the seamless integration of novel features, such as entrances on the north side and more expansive balconies on the south side, but also fosters the customization of living spaces and engenders a vibrant sense of community. Additionally, a continuous base serves to integrate the building into the surrounding street context, thereby reinstating a harmonious relationship with the adjacent neighborhood.

Our material choices prioritize economic and sustainable utilization. Easily replaceable wood is employed for planter cladding and facade, complemented by natural fiber insulation and plant charcoal to offset the CO2 emissions associated with the concrete structure. Concurrently, the primary load-bearing structure is composed of concrete, ensuring both fire safety and minimal maintenance costs. A pivotal aspect of our climate-resilient transformation involves the incorporation of greenery on the facades to positively influence the microclimate in the vicinity of the building. This is coupled with a comprehensive rainwater management system, incorporating storage for utilization and retention during intense rainfall events. As a contribution to biodiversity, an assortment of plant species is judiciously combined to provide a year-round supply of flowers and sustenance for insects and birds.

The Klimaquartier Würselen is characterized by strong open space references and clearly defined urban spaces. It mediates between the new and existing settlement bodies, the various neighborhoods and the open landscape in the east. In order to meet the current climatic changes and the scarcity of resources, the neighborhood will be developed in a space- and material-saving manner using timber construction; water and other resources will be used locally and treated on site.

The new neighborhood landscape complements the existing open block perimeter while forming defined neighborhoods with intimate courtyards that combine village courtyard structures with play streets. The small-scale buildings surround the Green Center, which forms the heart of the neighborhood and functions as a meeting space for the surrounding neighborhoods.

All buildings are based on the same construction grid, which corresponds to the deep garage grid of 5m. The bulkhead construction method, optimized for timber construction, forms the basis for the feasibility of the various building typologies. At the same time, repetitive building elements and construction principles ensure efficient planning and minimized construction times. The efficient basic structure allows for a variety of floor plan types - from one-room apartments to row houses to group apartments.

The neighborhood at Fuhrenkamp takes on the responsibility of a climate-friendly settlement. The compact development minimizes the degree of sealing and creates generous green spaces with dense tree populations. These air-condition the neighborhood and increase biodiversity. Stormwater management functions according to a sponge city and cascade principles, in which rainwater is retained and temporarily stored, evaporates and infiltrates or is discharged into local ditches. Renewable energy is generated locally.

The use of durable materials, building with used and recycled materials, and a wood construction method contribute to climate protection. Promoting and enabling a change in mobility behavior achieves a low-car neighborhood. The climate quarter creates a social mix by offering diverse, also new forms of housing as well as friendly street spaces for play and circulation, diverse open spaces and neighborhood centers for all generations.

The Fuhrenkamp neighborhood is being developed in phases, beginning in the south and growing out of the city. The development in individual steps makes it possible to learn from what already exists and to make appropriate adjustments to meet changing needs. The edges of the individual neighborhoods in the area react in a differentiated manner to their context: the neighborhoods leave sufficient distance to the section of forest to the west. At the same time, the biotope network is strengthened and expanded in a vertical direction between the existing structures and the new neighborhoods to the east. The new district is holistically interconnected through a framework of neighborhood centers.

How to build using simple means in construction, building services, fire protection, floor plan design and open space and still react to the ongoing questions of climate adjustment and resiliency?

"Build Simply" shows answers to these questions in a 5-step strategy which we developed together with our cooperation partners on levels of structural engineering, building technology and landscape design:

1. Simple volumes connected to an active arcade
2. Intelligent fire protection
3. Reduction of technology through clever construction
4. Use of local energy resources
5. Cradle-to-cradle/Build sorted

On an architectural level, these principles are implemented by public and semi-public spaces aligned to the common yard, the lowest building class possible, continous floor plans for a better ventilation within each apartment and a structure allowing an effective planning with wood. Nevertheless, the main focus of the design relies on the needs of people to promote a
communal and sustainable togetherness

How can we transform vacant department stores in Germany and bring them to a new stage of life with new uses?

Hundreds of department stores stand empty in German city centers. At Hermannplatz in Berlin, an old Karstadt building could be redesigned. A new façade creates a strong face in the urban context and an invitation to a differentiated courtyard sequence, which was redesigned as a playful open space experience. Instead of shopping, living, working and community-oriented offerings now meet the needs of the growing urban society in the 21st century.

The existing Karstadt building provides valuable building materials that are deconstructed, recycled and reused. According to the layer principle, load-bearing and non-load-bearing components are structurally independent of each other. Thus, they can be used independently in their various life cycles.
A durable, urban façade forms the new face to the city and creates a gateway to the interior.

A varied sequence of courtyards accompanies the crossing and becomes an urban experience: the Werkhof with its lively hustle and bustle, the Green Heart as a central interface and at the same time as a place of retreat, and the city playground, which promotes interaction and participation. Flora and fauna form the connecting element of the spatial sequence within the courtyard structure up to the roof terraces.

The Humboldt Block combines existing and new buildings to create a new productive quarter with a character know for Berlin, connects on many levels with its surrounding and can respond flexible on future challenges. The urban design aims to connect the area wit its surrounding - on one side the Humboldthain as an important open space, on the other side with the adjacent areas and institutions of the technology park.

The structural setting completes the perimeter development of the building block along Gustav-Meyer-Allee. Existing and new buildings merge to form a quarter with a strong character, creating an outside view typical for the location. The part on Gustav-Meyer-Allee with its public first floor areas form the showcase, representing the new quarter. In the center of the Humboldt Block, a sequence of squares is created to connect the entrances of the new and old buildings. Those buildings face each other and form a common public space.

The development is divided into nine north-south oriented strips of buildings, some of which are grouped together by internal courtyards. The main internal development for delivery traffic divides the resulting building strips in an east-west direction. The permeable building structure opens generously to the Humboldthain and links the quarter with its surroundings. The main thoroughfare is aligned with the two existing crosswalks of the block.

From a factory site to a green living quarter!

The concept for the area of ​​the former fireclay factory in Bonn-Duisdorf transforms the industrial site into a green neighbourhood with a high quality of living. The urban arrangement of the buildings is derived from the noise impact from the south and the location within a larger city block. A four-storey block building with a stagger along the railway line shields the quarter from the noise. Two polygonal, four-storey solitary buildings in the south form the transition to the more loosely arranged buildings in the area. The structurally identical buildings fit into their surroundings by being twisted against each other and creating diverse and exciting spaces through recesses and bends.

A neighbourhood square is being created that will serve as an identity-forming address and meeting point. An additional green open space stretches to the east, where the opposite entrances to the buildings are located.

All adjoining municipal and private plots of land in the east and west can be integrated into the urban picture. The existing building, a shelter for the homeless, can be retained and further developed by adding another story and balconies. The green connection in the middle of the quarter will be extended and merged with a green area with a playground. In the west, a solitary structure can provide a clear edge to the neighbourhood square and minimize the noise impact on the inside of the quarter.

All new buildings are planned as wood hybrid buildings and can be recycled and later returned to the material cycle thanks to their deconstructability. Noise protection, spatial formation, and the quality of living are not dependent on the development of the neighbouring properties, guaranteeing a functioning and green residential area.