This quiet neighbourhood has long been known for its colourful hodgepodge of old fashioned, working class houses. Throughout most of Tallinn’s history Kalamaja served as the town’s main fishing harbour. The wooden houses built to accommodate workers became Kalamaja's architectural legacy and are now what gives neighbourhood its unforgettable charm. The most architecturally unique of these are called 'Tallinn Houses'. Built in the 1920s and 30s, these two- to three-storey apartment houses are made of two symmetrical wooden wings separated by a stone central staircase. There are about 500 of these in the city today.