Mariehamm Cruises
Mariehamn is the capital of Aland and is largely a port town, so the majority of things to do here are port related, from gentle walks through the Esplanade (a large row of lime trees that reach from one harbor to another) and visiting the Pommern (a ship converted into a floating museum), to visiting the shipbuilding museum. But there are a few museums further ashore. Such as the Maritime museum that provides you with knowledge of some of the old sailing ships in the area.