De Wallen (red light street) is the largest and best-known red-light district in Amsterdam and a major tourist attraction. It is located in the heart of the oldest part of Amsterdam, covering several blocks south of the church Oude Kerk and crossed by several canals. De Wallen is a network of alleys containing approximately three hundred tiny one-room cabins rented by prostitutes who offer their sexual services from behind a window or glass door, typically illuminated with red lights. The area also has a number of sex shops, sex theatres and a sex museum.
De Wallen, together with the prostitution areas Singelgebied and Ruysdaelkade, form the Rosse Buurt (red light areas) of Amsterdam.