Amager is an island that is part of the municipality of Copenhagen; two bridges connect it to the centre to the west. Most of the buildings on Amager were built during the first two decades of the 20th century, mostly as five-storey blocks of flats. Large parts of south Amager changed dramatically during the last century, and particularly from the 1950s, when Copenhagen airport was built there. The area has been expanding gradually ever since. Amager is becoming more and more popular because of its proximity to the centre, good and frequent public transport services, the airport and the sea. However, despite its growing popularity house prices are still lower than in the centre.