Dubrovnik

Dubrovnik’s Old Town is one of those places where superlatives feel earned. The city walls — two kilometers of fortification up to six meters thick — encircle a perfectly preserved medieval city of marble streets, baroque churches, and terracotta rooftops that glow copper at sunset. Walking the walls is mandatory: the circuit takes about ninety minutes and offers views down into courtyard gardens, across to the island of Lokrum, and out over an Adriatic so blue it looks retouched.

Inside the walls, the Stradun is the main artery — a polished limestone boulevard that catches the light and reflects it back like a mirror. Off it, narrow lanes climb steeply through residential neighborhoods where laundry dries on lines strung between stone buildings and cats nap on warm doorsteps. Take the cable car up Mount Srd for the panoramic view, then descend to swim off the rocks at Buza Bar, a cliff-side terrace where you drink cold beer and jump into the Adriatic from a hole in the city wall.

When to go: May or October to avoid the cruise-ship crush. June and September are warm with manageable crowds. July and August are beautiful but packed.