 The music club, Linientreu, near the Kaiser Wilhelm Memorial Church, has been in business in the late 1980s and 1990s.Throughout the 1990s, people in their twenties from many countries, made Berlin's club scene the premier nightlife destination in the world.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.