Merenkurkku / Kvarken archipelago, Finland. Known for its unique geological situation. The seabed is one of world's fastest to rise up from the sea, 1 cm/year, after last ice age. It makes new islands outside Finland all the time. The fishermen have difficulties to navigate between those and a big part of the western coastline of Finland is moving far out to the sea. The mainland is increasing. Listed on the UNESCO Heritage List in both Sweden and Finland.