94 WALES, UNITED KINGDOM

If a U.K. road-trip piques your interest, consider visiting Wales, where the highways are less crowded (good if you’re new to driving on the “wrong” side of the road). The window for sighting bottlenose dolphins, harbour porpoises and Atlantic grey seals in Cardigan Bay is at its best between June and October. There are also about 600 castles. Stay: The Harbourmaster Hotel in the sleepy coastal town of Aberaeron oozes comfort from every corner of its 13 seaside-chic rooms.