Østerlars Is a Danish island best known for its round church and located where?
Østerlars Østerlars is a village in the northeast of the Danish island of Bornholm, 6 km south of Gudhjem and 5 km northwest of Østermarie. It is best known for its round church, the largest on the island. In January 2015 it had a population of 251.
Marstal Marstal is a town in southern Denmark, located in Ærø municipality on the island of Ærø. Marstal has a population of 2,306 (1 January 2014) and is the largest town on Ærø. It was in the abolished Marstal Municipality.