The Alster-Schwimmhalle is one of Germany's larger aquatics centers, located in the Hamburg district of Hohenfelde. Opened in 1973, it has regularly hosted various national and international swimming competitions.

The Alster-Schwimmhalle is notable for its 102 m (335 ft) by 52 m (171 ft) double hyperbolic-paraboloid concrete-shell roof structure, designed by Jörg Schlaich, then partner at Stuttgart-based engineering firm Leonhardt & Andrä. Resting on three bearings and only 8 cm (3.1 in) thin, the concrete roof remains one the world's largest of its kind. Reminiscent of a butterfly –an allegory to its function as a swimming venue– the airy roof structure earned the Alsterschwimmhalle its nickname as "Schwimmoper" (Aquatic Opera).

The building was substantially renovated in 2007 at a cost of approx 1 mio EUR. A further major renovation is planned for 2020 to 2024 at an expected cost of 60 mio EUR, closing the facility for four years.

Aquatics indoor long course swimming pool: 50 m (164 ft 1 in) length by 25 m (82 ft 0 in) width; the pool's depth is between 1,8 m and 5,0 m indoor multi-purpose & aquafitness pool: 25 m (82 ft 0 in) length by 10 m (32 ft 10 in) width; the pool's depth is between 0,9 m and 1,3 m indoor diving platforms: at 1,0 m, 3,0 m, 5,0 m, 7,5 m and 10,0 m height indoor water slide: at a length of 76 m heated, outdoor swimming pool: 145m² area; the pool's depth is 1,35 m Other amenities workout and fitness studios 3 Finnish saunas, 2 aroma saunas steam baths, hot and cold tubs phonothek, indoor and outdoor resting areas, lawn sauna bar, sun deck, restaurant day spa and massage service

Media related to Alsterschwimmhalle at Wikimedia Commons

• Alster-Schwimmhalle at Structurae
• Alster-Schwimmhalle at baederland.de (in German)
• Renovation in February 2019 (in German)