De Wallen, also known as Walletjes or Rosse Buurt, is a designated area for legalised prostitution and is Amsterdam's largest and most well known red-light district. This neighbourhood has become a famous attraction for tourists. It consists of a network of roads and alleys containing several hundred small, one-room apartments rented by sex workers who offer their services from behind a window or glass door, typically illuminated with red lights. In recent years the city government has been closing and repurposing the famous red light district windows in an effort to clean up the area and reduce the amount of party and sex tourism.