Walking tour of Cologne, Koln as it is known in Germany is Germany's 4th largest city & sits right on the banks of Father Rhine. The Cologne cathedral holds the relics of the three wisemen. The cathedral was the tallest in Europe until the Eiffel Tower was built. The most famous of products from the city is the "Water of Cologne" or "Eau de Cologne" made famous by the brand 4711.
The afternoon included a trip to the Floriade World Horticultural Expo which takes place once every ten years. Floriade is a global event that attracts 30,000 visitors per day from all over the world.