Zwammerdam
Zwammerdam is a town in the Dutch province of South Holland. It is a part of the municipality of Alphen aan den Rijn, and lies about 6 km southeast of Alphen aan de Rijn. In 2001, the town of Zwammerdam had 1709 inhabitants. The built-up area of the town was 62 kmĀ², and contained 484 residences.