Curiohaus, Heritage monument in Rotherbaum, Hamburg, Germany

The Curiohaus is an office and event building at Rothenbaumchaussee 11–17 in Hamburg's Rotherbaum district, erected between 1908 and 1911 to designs by Johann Emil Schaudt and Walther Puritz for the Society of Friends of the National School and Education System. It is named after the society's founder, Johann Carl Daniel Curio. Its large hall survived the Second World War largely undamaged; since 1948 the building has been owned by the Hamburg branch of the GEW education union, and in October 1997 it was listed as a monument together with its fixed fittings, front-garden pedestals, lamps and the oval of the courtyard garden.

Built in 1911 as a society house, the building later became a location for British military tribunals addressing Nazi crimes after the Second World War. This period marked an important chapter in the city's reckoning with its past.

The building is named after Johann Carl Daniel Curio, founder of the Society of Friends of the National School and Education System, which commissioned it. In the 1920s Hamburg artists held carnival festivals here lasting several days, known as the Hamburg Artists' Festivals for their cultural programme. A plaque on the house recalls its founding and its expropriation in 1933.

The Curiohaus stands at Rothenbaumchaussee 11–17 in Rotherbaum, a short walk from Dammtor station and the Grindel area. Since 1998 it has been rented out for concerts, conferences and company or club celebrations, so rooms are generally seen during an event rather than on a daily tour. The 1997 restoration covered the building as a whole ensemble, including the front-garden pedestals, the lamps and the oval courtyard garden.

The great hall survived the Second World War largely undamaged, which is why British military courts held the Curiohaus Trials here from 1946 to 1948, including the main Neuengamme trial and seven Ravensbrück trials. A plaque on the building recalls its founding, its expropriation in 1933 and these proceedings.