Although many know the magnificent CologneCathedral as the city's main tourist attraction ... between 3.5 to 16 meters (37-172 ft) under the cathedral have thrilled Stinnesbeck and her colleagues.

The best free attractions in the world, from art galleries and museums to cathedrals and churches, in Europe, America, Canada ...

However, perhaps nowhere takes it more seriously than Cologne, with the German city's Christmas attractions bringing ... the huge market outside Cologne Cathedral, which boasts a towering ...