Suomenlinna Castle is a World Heritage Site and can be reached by water ferry. This huge castle, located directly on the shore of the Gulf of Finland, includes cannons, tunnels, a ship dock and some museums. Suomenlinna Castle offers an unparalleled panoramic view, surrounded by breathtaking landscapes. It has been added to the UNESCO World Heritage List, to be preserved as an example of military and European architecture dating back to the eighteenth century AD. Visit it, and have a nice time in the arms of this wonderful historical place.