10 Best Things to Do in Cologne

The Hohenzollern Bridge carries more than 1,200 trains a day across the Rhine and, since roughly 2008, has also carried several tonnes of love-locks clipped to its pedestrian railings by couples who then throw the keys into the water. The city has stopped trying to remove them - the weight is fine, engineers have checked, and the locks have become the single most photographed non-cathedral image of Cologne. Walk the full length from the cathedral side to Deutz and back, and you'll cross exactly where the Romans built their first Rhine crossing in the first century.

The view looking back at the Dom from the Deutz bank at sunset is the postcard shot. On the north side of the bridge you'll also spot the equestrian statues of four Prussian kaisers, added between 1867 and 1911.

Pro Tip: Cross to the Deutz side and walk 200 metres to the KölnTriangle observation deck (around EUR 5 in 2026) for a panorama that includes both the cathedral and the bridge in one frame - impossible from anywhere on the west bank.

Cologne's Old Town (Altstadt) was 95% destroyed in the war, so what you see today is a careful reconstruction of the medieval merchants' quarter that ran along the Rhine. The Fischmarkt itself is the small triangular square just north of Groß St. Martin, ringed by narrow candy-coloured gabled houses in mustard, salmon, pistachio and pale blue. It looks exactly like the tourism board says it will, and yes, you should take the photo.

From the Fischmarkt you can walk the whole Altstadt loop in under an hour: past the Historical City Hall with its 15th-century tower, down the Alter Markt with its market stalls, and along the cobbled lanes toward Heumarkt. Most of what looks ancient was rebuilt after 1945 using original stones where possible.

Pro Tip: The Fischmarkt gets swamped between 11:00 and 15:00. Come at 08:30 for empty streets and soft light, or after 21:00 when the beer halls empty out onto the cobbles and the whole quarter feels lived-in rather than photographed.

The Cologne Chocolate Museum (Schokoladenmuseum Köln) sits on its own peninsula in the Rhine, in a purpose-built glass and steel building that looks like a ship's prow. It was founded in 1993 by Hans Imhoff, the confectioner behind Stollwerck, and it works because it takes chocolate seriously - the history of cacao from the Aztecs to the industrial revolution, a working production line behind glass where you can watch real bars being made, and a three-metre chocolate fountain where staff dip wafers for every visitor.

Allow 90 minutes minimum. The upper floors cover the ethics of modern cocoa sourcing, which is more interesting than it sounds, and there's a tropical greenhouse with actual cacao trees.

Pro Tip: The riverside terrace café upstairs is where locals go for the view of the Rhine and Deutz beyond, not the museum-goers' café on the ground floor. Ticket entry is roughly EUR 15 for adults in 2026, and you'll want the audio guide - the on-wall text is fine but the audio interviews with cocoa farmers add the human layer.

The Rhine promenade (Rheinpromenade) runs along the west bank for roughly four kilometres from the Zoobrücke in the north down past the Chocolate Museum to the Südbrücke. The most walkable stretch is the one-kilometre section between the Hohenzollern Bridge and the Deutzer Brücke, which passes directly behind the Fischmarkt, past river cruise moorings and the twin cranes of the Rheinauhafen redevelopment.

This is where Cologne actually relaxes. Locals cycle it, jog it, drink beer on the grass in summer and watch the container barges push upstream. In 2026 the promenade is fully pedestrianised on the central stretch after a 2023 traffic-calming project, so you no longer have to dodge cars.

Pro Tip: Start at the Malakoffturm (the old Prussian defensive tower next to the Chocolate Museum), walk north to the Hohenzollern Bridge, cross to Deutz, and walk back on the east bank. It's a two-hour loop, and the east bank has almost no tourists and the best view of the cathedral skyline.

Museum Ludwig is one of Europe's most important collections of 20th-century art, and it sits directly behind the cathedral in a zigzag-roofed building that also houses the Philharmonie. The collection started with a 1976 gift from chocolate manufacturer Peter Ludwig and now holds the third-largest Picasso holding in the world, plus significant Warhol, Lichtenstein, Rauschenberg and one of the most complete Russian avant-garde collections outside Moscow.

The layout is chronological: German Expressionism on the lower floor, Pop Art in the middle, contemporary and photography at the top. The Warhol section alone justifies the ticket - Brillo Boxes, an original Marilyn, and one of his Elvis paintings.

Pro Tip: The Museum Ludwig closes on Mondays, which catches out roughly half of first-time visitors, and admission is around EUR 12 in 2026. The KölnTag on the first Thursday of every month gives half-price entry after 17:00. The ground-floor café is one of the few places within 500 metres of the cathedral where you can eat lunch without a tourist markup.

The Roman-Germanic Museum (Römisch-Germanisches Museum) holds the archaeology of Roman Cologne, which was one of the largest cities north of the Alps for four hundred years. The star piece is the Dionysus mosaic, a 70-square-metre floor uncovered in 1941 during an air-raid shelter dig, which once decorated the dining room of a wealthy Roman merchant. The mosaic remains in situ at the museum's main building at Roncalliplatz, which is closed for renovation through much of 2026 - during the works the core collection has moved to the Belgisches Haus on Cäcilienstraße.

Beyond the mosaic, you'll see the funerary monument of Poblicius (a 15-metre reconstructed Roman tomb), Roman glass considered among the finest in Europe, and gold jewellery from Frankish graves.

Pro Tip: Check the museum's status at roemisch-germanisches-museum.de before you go - the Dionysus mosaic itself stays visible through a glass panel at Roncalliplatz even during renovation, so you can see the highlight for free from outside. The temporary Belgisches Haus exhibition costs roughly EUR 6.

Great St. Martin Church (Groß St. Martin) is the second silhouette on the Cologne skyline - the squat Romanesque tower with four turrets that anchors every Rhine-side photo alongside the cathedral. The current church dates to the 12th century, sits on the foundations of a Roman warehouse from around 100 AD (you can see the excavations in the crypt), and was almost completely destroyed in 1945. Restoration wasn't finished until 1985, which means the interior feels stark and modern under a very old skin.

Entry is free. The crypt is what most visitors miss - a small admission gets you down to the Roman substructure, where you can see the harbour wall that used to face the Rhine before the river shifted.

Pro Tip: Groß St. Martin is one of Cologne's twelve preserved Romanesque churches, and if you have half a day spare it's worth walking the loop of the biggest four - St. Gereon, St. Andreas, St. Aposteln and this one. Groß St. Martin is the easiest starting point because it's in the middle of the Fischmarkt tourist route.

Kolumba is the art museum of the Archdiocese of Cologne, designed by Swiss architect Peter Zumthor and opened in 2007 on the ruins of St. Kolumba church, which was bombed in 1943. The building envelopes the medieval and Roman remains beneath it, letting Rhine breeze and daylight filter through a perforated brick screen wall. It's regularly on lists of the best small museums in Europe, and it's the antidote to Museum Ludwig if you want something quiet, slow and contemplative.

The collection ranges from medieval reliquaries to contemporary installations, hung with almost no labels - Kolumba wants you to look first and read later. Allow 90 minutes.

Pro Tip: The museum is closed Tuesdays, keeps very restricted hours (12:00 to 17:00 typically), and only takes a fixed number of visitors per hour. Book a slot online at kolumba.de before you go. Photography is banned inside, which is part of the point. Admission was around EUR 8 in 2026 and worth every cent for the architecture alone.

Kölsch is Cologne's local beer style - a bright, top-fermented lager served in a 0.2-litre straight glass called a Stange. There are legally only around two dozen breweries allowed to produce Kölsch under the 1986 Kölsch Konvention, and you'll do yourself a favour by trying at least three of them in the Altstadt. Früh am Dom (in a warren of vaulted rooms two minutes from the cathedral) and Brauhaus Sion (a five-minute walk south) are the two biggest historic beer halls. The waiters (Köbes) wear blue aprons, are professionally curt, and will keep bringing you fresh glasses without asking until you put a beer mat on top of your empty.

Both pubs serve traditional Rhenish food - Halve Hahn (a rye roll with Gouda), Himmel un Ääd (mashed potato with black pudding and apple), and Kölsche Kaviar (blood sausage with onion rings).

Pro Tip: A single Kölsch costs about EUR 2.20 in 2026, and each glass is small deliberately so it stays cold and fresh. Bar-hop between three houses in one evening - Früh, Sion and Peters Brauhaus - and you'll get a proper comparison. Don't tip more than 10%; the Köbes don't expect it and it's not the local custom.