The line between Gotland and Mariehamn isn't available at this time by any ferry companies on the NetFerry website.
Mariehamn is the capital of Åland, an autonomous archipelago that lies off the southwestern coast of Finland. Political powers are exercised by a local government based on the island, rather than by the Finnish national government due to the archipelago's independent status. Most people on the island also speak Swedish, rather than Finnish, and it's the smallest region of Finland. The area used to belong to the Russian Empire, reflected in the layout of the town, the streets are broad and lined with Linden trees. Today Mariehamn is a busy little seaside town during the summer months, it'... [More information]