Märket is a tiny island divided by the Finnish-Swedish border. When the finns inadvertedly built a lighthouse on the wrong side of the border, the swedes agreed to trade it for an equal spot of land on the other side, causing the border to zig-zag.
fact
Märket is a tiny island divided by the Finnish-Swedish border. When the finns inadvertedly built a lighthouse on the wrong side of the border, the swedes agreed to trade it for an equal spot of land on the other side, causing the border to zig-zag.