This neighbourhood, between the 1st and the 4th arrondisement is divided into two. The Beaubourg is famous for the Pompidou Centre, which is a museum, a library and a modern, colourful restaurant. It has vast squares, pedestrian precincts, street music and is a favourite with young people. Its proximity to Marais and Montorgueil makes it easy to find grocery shops and laundromats. The architecture is typically Parisian; gray slate roofs, large windows and high ceilings. At the junction of Beaubourg and Les Halles there is a square surrounded by fast food restaurants. In Les Halles, the Forum des Halles is the central building, a vast underground shopping centre with some of the most important shops in Paris. It is a modern and impressive building, made up of glass domes surrounded by trees and vines. In the Forum there are also two cinemas, some small restaurants and a swimming pool. The neighbourhood is fun by day but a bit risky at night.