Even if Cologne is the fourth largest city in Germany, the stunning Old Town is compact, charming and ideal to discover on foot at any season. Both newly arrived travelers and residents wishing to dive into regional history will love the Essential Free Tour of Cologne. This top-rated walk designed by a passionate guide will take you for a fun exploration covering all the must-see monuments of the Old Town, as well as some interesting but lesser-visited landmarks! Did you know that Cologne is the oldest city in Germany? Along the tour you will embark on a journey back in time—from the foundation of the city in the 1st century AD as the Roman Colonia Agrippina, to the splendors of Medieval times when it became an independent Free Imperial City, to the horrors of WWII and the post-war era.