Britain’s smallest city, St Davids has fewer than 2,000 people and a full cathedral, set down in a hollow below the streets so that raiders couldn’t spot it from the sea. Wales’s patron saint founded a monastery here around 500 AD, and his shrine still draws pilgrims; the ruined Bishop’s Palace beside the cathedral is looked after by Cadw. The compact centre sits near the tip of a windswept peninsula, with the coast path and Whitesands beach close by.

Photo Michael Hamments / Unsplash