Palace of Galerius

Sprawling in splendid incongruity amidst the souvenir shops and crêperies of Plateia Navarinou, the ruins of this 3rd- to 4th-century palace remain impressive in scope. You can descend into it, or just peer over the handrail to see the surviving mosaics, columns, walls and infrastructure. What most brings the site to life is the Arched Hall, where exhibits, videos and digital recreations convey something of the nature and scope of not just the palace, but the nearby triumphal arch and rotunda.