Two symmetrical structures span an organic surface, the hammock:

The tower (towards the park)

• o.: Stäffele, Stuttgart view, shade provider
• below: A place for culture, slowing down & playing

The slope (towards LBBW)

• Outside: Vineyard, flight of steps, waterfall
• Inside: Space for and about Stuttgart

The tower is a lightweight construction inspired by Frei Otto. Several steel cables suspended from a 60 metre high mast create an airy, lively form. The mast corresponds with the similarly high historic railway station tower. Travellers and Stuttgart residents can enjoy an impressive view of the cauldron and beyond from two wooden platforms, which can be reached via stacks along the steel cables. The open design does not obstruct the fresh air corridor, while cooling water mist enhances the microclimate. Large awnings provide shade or protection from the rain.

An open, inviting area will be created underneath the tower, offering a high quality of stay all year round. It will be possible to spend time here without consuming, and a beer garden will also serve the area. The outdoor stage offers space for artists, dance or readings. A small lake is fed by the waterfall and flows into the castle park. Several hammocks offer space for relaxation. A playground rounds off the offer. The slope mirrors the shape of the tower, but is largely an enclosed building. The southern, sloping façade is planted with vines (urban gardening) and is reminiscent of Stuttgart's vineyards. A wide flight of steps invites people to linger. The green roof terrace is spanned by a spire similar to the tower and houses a café. This is the source of a stream that flows down the edge of the steps like a waterfall and surrounds the main entrance to the building.

The interior of the sustainable building is characterised by its flexible use and will adapt to the needs of the city's population over the coming decades. The exposed premises are intended to be accessible to associations and groups in particular, thus honouring their important work in urban society. At the same time, they offer travellers the opportunity to get to know Stuttgart.

Ground floor:

• Raupe Immersatt 2.0: café / restaurant for informal lingering
• Best of Stuttgart: Temporary exhibition space for Stuttgart companies, clubs and organisations (e.g. Daimler, Rittersport, Trumpf, Kärcher, SWR, Wilhelma, MTV)
• Universal event hall
• Infrastructure for travellers: Public toilets, lockers, changing rooms / showers

Upper floors:

• Rooms for (co-)making for Stuttgart residents: Similar to the pioneer use in the Schöttle area for and with existing groups and clubs
• Youth centre

Basement:

• Bicycle station with prominent entrance

At night, the silhouette of the ‘hammock’ is discreetly illuminated with LEDs, creating a new Stuttgart landmark even in the dark.