The Gulf of Finland (Finnish: Suomenlahti) is the easternmost arm of the Baltic Sea. Hamina is situated on the shores of the sea and there are over 400 islands off the coast of Hamina, including the main island of the Eastern Gulf of Finland National Park,
There is a stone labyrinth in Mustaviiri Island. The oldest labyrinths were made in the Stone Age, and the youngest a bit over a hundred years ago. It is believed that they were places for meeting and playing, but they probably have something to do with fishing and hunting magic as well. Most scientists nowadays think, that the labyrinths are religious constructions.
Theme of Hamina Tattoo 2014 is: 'Baltic Sea - Great past, better future'. The Hamina Tattoo 2014 highlights news from the Baltic Sea, collects money for protecting the natural environment of the Baltic Sea, introduces paintings and historical nautical charts with the motif of the Baltic Sea, and sounds music inspired by the Baltic Sea.
On the island of Mustaviiri, in Gulf of Finland National Park, visitors can find the latest Unesco World Heritage Site which has been included in the World Heritage List in Finland. The small, drilled hole in rock, about the size of a matchbox, is one of the original station points of Struve Geodetic Arc, a chain of survey triangulations.
Go Bird Watching to the Gulf of Finland National Park The National Park is known for its sea birds. In May, the area also offers good possibilities to watch the arctic birds migrating, for example in the bird watching tower on the island of Ulko-Tammio.