Berlin's nightlife has been celebrated as one of the most diverse and vibrant of its kind. In the 1970s and 80s the SO36 in Kreuzberg was a center for punk music and culture. The ''SOUND'' and the ''Dschungel'' gained notoriety. Throughout the 1990s, people in their 20s from all over the world, particularly those in Western and Central Europe, made Berlin's club scene a premier nightlife venue. After the fall of the Berlin Wall in 1989, many historic buildings in Mitte, the former city center of East Berlin, were illegally occupied and re-built by young squatters and became a fertile ground for underground and counterculture gatherings. The central boroughs are home to many nightclubs, including the Watergate, Tresor and Berghain. The KitKatClub and several other locations are known for their sexually uninhibited parties.