Frankfurt am Main

Gliding past Frankfurt's landmarks aboard a boat is one of the most peaceful ways to see the city. Primus Linie runs 50-minute sightseeing cruises from the Mainkai boat docks both upstream and down; for the best skyline views, take the full 100-minute circuit. It also hosts various dinner cruises and party cruises – schedules are posted online.

Frankfurt’s red-sandstone cathedral is dominated by a 95m-high Gothic tower, which can be climbed via 328 steps. Construction began in the 13th century; from 1356 to 1792, the Holy Roman Emperors were elected (and, after 1562, consecrated and crowned) in the Wahlkapelle at the end of the right aisle (look for the 'skull' altar). The cathedral was rebuilt both after an 1867 fire and after the bombings of 1944, which left it a burnt-out shell.

The Römerberg is Frankfurt’s old central square. Ornately gabled half-timbered buildings, reconstructed after WWII, give an idea of how beautiful the city’s medieval core once was. In the square's centre is the Gerechtigkeitsbrunnen.

Founded in 1815, this world-renowned art gallery has an outstanding collection of European art from masters including Dürer, Rembrandt, Rubens, Renoir, Picasso and Cézanne, dating from the Middle Ages to today. More contemporary works by artists including Francis Bacon and Gerhard Richter are showcased in a subterranean extension lit by circular skylights. Admission prices can vary according to temporary exhibitions. Queues can be lengthy, so save time by pre-booking tickets online.

Aromatic stalls inside this bustling traditional market hall sell artisan smoked sausages, cheeses, roasted nuts, breads, pretzels, loose-leaf teas, pastries, cakes and chocolates, along with fruit, vegetables, spices, fresh pasta, olives, meat, poultry and, downstairs, fish. It's unmissable for picnickers or self-caterers, or anyone wanting to experience Frankfurt life. The upper-level wine bar opens to a terrace.