Castle
Kronborg Slot
Best known as the Elsinore Castle of Shakespeare's Hamlet, this Unesco World Heritage Site is a vast Renaissance masterpiece topped by baroque green-copper spires. It's ringed by moats, fortifications and powerful Vaubanesque star bastions that you can discover without a ticket. But it's well worth the entry fee to explore the inner palace's rooms, tapestries, ceiling paintings and viewpoints and, best of all, to delve into the spooky maze of casemates – subterranean dungeon passages barely lit by flickering paraffin lamps.