1. Dubrovnik City Walls
Dubrovnik's city walls are among the best-preserved medieval fortifications in Europe. Built in stages between the 13th and 17th centuries, the circuit runs 1,940 meters around the entire Old Town, rising up to 25 meters high on the landward side and around 1.5 to 3 meters on the seaward side. When Constantinople fell in 1453, the city rushed to add the Minčeta Tower as extra protection. The walls were never breached.
Walking the full loop takes about an hour and a half at a leisurely pace — longer in summer when you're dodging crowds at every tight bend. From up here you look straight down into private courtyards, washing lines, and gardens that tourists on the streets below never see. The views out over the Adriatic and back over the terracotta rooftops are the real payoff. On a clear day you can see Lokrum Island floating just offshore.
Buy your ticket in the morning when the walls open — by 10am the narrow walkway gets congested in both directions, and there's no overtaking on the single-track sections. A single ticket also covers entry to Fort Bokar.