Mónaco
Best monthMay, June and September
Water23º
Cost/day€130–200/day
Length1 day
A tiny principality you can walk across, with the harbour, the casino and the oceanographic museum as highlights.
Heads up: Everything is geared to luxury. Many visit on a day trip from Nice, 25 minutes away by train.
Plan the trip
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External links. Prices here are indicative — check them before you book.