Scattered throughout the Old Town, these twelve churches are among the oldest buildings in Cologne—most of them date back to the 12th and 13th centuries. They’ve all got that heavy Romanesque look, but each one’s a bit different. Great St. Martin stands out with its massive tower right by the river, St. Gereon has got an unusual oval dome, and St. Maria im Kapitol is one of the largest. You don’t need to see all twelve, but stopping in at a couple while you’re exploring the Old Town gives you a good feel for the city’s medieval side.

This is an impressive Marseille roundabout where many tourist photos have been taken. It is a major transport hub, whose focal point is a large fountain with an interesting obelisk statue. There are several cafés around the square's perimeter and off down the streets of the neighbourhood.

Technology lovers should not miss the quirky Visvesvaraya Industrial & Technical Museum. Named after the Dewan of Mysore, its five main galleries include a variety of different displays, from a replica of the Wright brothers’ 1903 flyer to virtual-reality computer games.