A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

The world's tallest church tower reveals a spectacular view to anyone up to the task of climbing the daunting staircase.

An old slaughterhouse now holds the largest collection of pig artifacts.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.