With a population of about a million, Cologne is Germany’s fourth largest city Cologne overview: More »

At 157 metres, Cologne Cathedral is the third tallest church building in the world. From 1880 to 1888 it was the tallest building in the world and it remains the world’s largest Gothic cathedral Cologne sights: More »

Cologne-Bonn Airport (Flughafen Köln/Bonn) is one of Germany’s largest airports Cologne by air: More »