Start your trip with Cologne's most iconic landmark, the Cologne Cathedral. This Gothic masterpiece took over 600 years to complete and is an essential part of the city's skyline. Take a guided tour of the cathedral with its Romanesque cloisters or climb up to the top for breathtaking views of the city. You can also marvel at the three stained glass windows created by Gerhard Richter. Afterward, head to the nearby Alter Markt for a taste of Cologne's culinary specialties.
Start your day by visiting the Museum Ludwig to see one of the largest collections of contemporary art in Europe. The museum features works by Picasso, Warhol, and Lichtenstein, as well as the largest collection of Pop Art outside the United States. Afterward, take a pleasant stroll through the Botanical Gardens, located right behind the museum. In the afternoon, head to the Chocolate Museum for a tour and tasting of Germany's most famous chocolatier, Lindt.
Spend your final day in Cologne exploring the historic Old Town. Stroll down the picturesque alleyways, lined with colorful houses and traditional pubs. Take a look at the impressive Town Hall or visit the Roman-Germanic Museum to explore the city's ancient roots. Later in the day, board a Rhine River cruise and take in the stunning views of Cologne's waterfront. Enjoy dinner and drinks onboard as you watch the sun set over the city.
With more time, consider taking a day trip to the nearby city of Bonn, birthplace of Beethoven and home to several world-class museums. If you have less time, skip the Rhine River Cruise and spend an extra day exploring the city's museums and historic sites. Keep in mind that many attractions may have limited hours on Sundays or holidays, so plan accordingly.