Where is Bornholm?

The answer

Bornholm is an island in the Baltic Sea, east of the rest of Denmark and closer to Sweden. It is not linked by bridge, so you reach it by ferry or by air; Visit Bornholm lists flights from Copenhagen and sailings from Kołobrzeg in Poland among the options. Because of the journey, treat it as a destination of its own, with several nights rather than a day trip. Granite cliffs, round churches and varied cycling make it very different from mainland Denmark.