Tresor (German for safe or vault) is an underground techno nightclub in Berlin and a record label. The club was founded in March 1991 in the vaults of the former old Wertheim department store at Leipziger Strasse 126-128 in Mitte, the central part of the former East Berlin, next to the famous Potsdamer Platz. However, the history of the club goes back to 1988 when the electronic music label Interfisch opened the Ufo Club in Berlin.