From its medieval Old Town, made up of narrow cobbled streets, to the neoclassical architecture of its New Town, Edinburgh is a city of beautiful contrasts. Its most famous landmark, Edinburgh Castle, looms over the city from its hilltop location, while Arthur's Seat, a dormant volcano, offers sweeping views over the Scottish capital's ample green spaces. A popular destination in summer, the city really comes alive during August, when the Edinburgh Festival Fringe of drama and comedy (the largest arts festival in the world) spills on to the streets.