Hiiumaa (http://www.hiiumaa.ee/ind...) (http://www.visitestonia.c...) is the second biggest island in Estonia. The Swedish and German name of the island is Dagö.
It's located just north of Saaremaa Island and west from the mainland. Formed 455 million years ago as a result of a meteorite explosion Hiiumaa is one of the oldest islands in the world.
The island is known for its wealth of lighthouses.
