The terminal building was originally a customs warehouse, the harbour building K8. It was built in 1937 designed by the city architect Gunnar Taucher. The building was changed to a passenger terminal in 1977, when the Finnjet started traffic between Helsinki and Travemünde, Germany. The work for the change was designed by the harbour architect Kari Unelius.[1][2] The terminal building has since been expanded many times, the latest time so far in 2008 with a new glass-walled expansion on the shore side, which was designed by architect Ari Bungers.[3] The building is protected.[2]
Opposite the terminal entrance is the anchor of the Russian passenger ship Iezekiil which sank in 1855. The anchor was found by divers near Suomenlinna in 1977.[4]
The terminal is served by the Helsinki tram lines 5 and 4.