The Best Landmarks in Monaco

Monaco's deep-water harbor, in use since ancient Greek times and now home to some of the world's most absurd superyachts. Free to wander any hour, ringed by cafés, the seasonal outdoor pool-turned-ice-rink, and the Grand Prix start line. It's the principality's living room — come for an evening stroll and unapologetic yacht-gawking.

The 1875 white-stone cathedral on the Rock where Grace Kelly married Prince Rainier — and where both are buried. Free, open daily roughly 8:30-18:00, and a 15-minute stop that anchors any Monaco-Ville walk. Come for the princely tombs and the quiet; don't expect a Gothic giant — it's intimate by cathedral standards.