The Cologne Cathedral is the most famous church in Germany and is a great place to visit on this tour. You can also visit Alter Markt, a historic square with beautiful narrow alleys in the old town of Cologne. It's now a popular place to go out for a drink. If you are a beer lover, try the Cologne beer Kölsch. Also, make sure you take a look at the historic Gaffel Haus at Alter Markt.

If you like shopping, you should definitely visit the Hohe Strasse. This is the main shopping street in Cologne. If you are visiting around the Christmas period, don't forget the Christmas markets. Christmas markets are typically German. Experience the cozy, warm Christmas atmosphere with a glass of mulled wine or hot chocolate. You can do this at the Neumarkt for example. This square is the largest square in Cologne city center. Regardless of what time of year you're there, this is a bustling square. with many shops and restaurants surrounding it.