Calvi, on the French island of Corsica, has a long and illustrious history — its fiery medieval citadel still stands today. It's been a tourist hotspot since the 1920s, thanks to its moon-shaped bay lined with a golden, sandy beach and forested mountains on the horizon. Today it has the feel of a chic resort on the French Riviera, with waterfront restaurants, luxury hotels, and multi-million dollar yachts at anchor.