Distance: About 11 miles
It's only a 30-minute drive from Brühl to Cologne - so you shouldn't miss the most visited sight in North Rhine-Westphalia: Cologne Cathedral. The church is one of the European masterpieces of Gothic architecture. Art lovers, tourists and pilgrims meet here - the cathedral is the most important pilgrimage church in Europe.
Beneath the cathedral, you can discover its Roman foundations, which point to another UNESCO World Heritage Site in the Rhineland. Cologne, originally Colonia Claudia Ara Agrippinensium, was one of the urban centres of the Lower Germanic Limes, the wet border between the Roman province of Lower Germania and free Germania. Travellers can still spot symbols of Roman power, building remains and archaeological monuments throughout the city.
Good to know: Over six million people visit Cologne Cathedral every year, making it the most visited attraction in Germany.