This interactive sculpture allows visitors to leave a message in case a friend passes by.

It's good luck to be mocked by this monkey.

A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

Money made from smuggling sugar helped create this wondrous rock maze in honor of the Prussian Queen Louise.

Browse through a century of this principality's first popular export.

The oldest surviving wooden bridge over Rhine lets travelers cross easily from Switzerland to Liechtensten.

The fairy tale castle of the "fairy-tale king."

Macabre astrological automaton clock dating to the late 1400s.

A preserved Nazi labor camp now has a Holocaust museum on site and memorials to the thousands that died while imprisoned at the camp.