Alster-Schwimmhalle

The indoor swimming pool, which is listed as a protected historic building, will be modernized and extended. To this day the characteristic roof shell is one of the largest shell constructions in Europe. The concrete shell roof consists of two hyperbolic paraboloid shells resting on three support points that also contain the surface water drainage pipes. In the plans by gmp the conspicuous roof shell and the pool areas covered by it have been retained whilst the existing 50-meter pool and the learner pool are to be fully refurbished. The removal of the grandstand will create space under the pool roof for a separate diving pool. The existing extension building to the north will be removed to make room for a new extension. A construction joint will create a visual separation between the existing building and the new part, the design language of which is reminiscent of the previous extension. A single-story rectangular building will be built parallel to the northwest-facing facade and accommodate a warm 25m pool and a pool for courses; the new pools extend the total water surface of the indoor pool facility by about one quarter. Towards the northeast, near Ifflandstrasse, the new building will have two stories, accommodating the entrance and changing rooms on the first floor and the fitness and sauna areas on the upper floor. The entrance faces Sechslingspforte and can be reached via a large forecourt.