A mechanical clock built in 1914, with a rotation of 12 historical figures on its face.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

This 19th century cyclorama acts like an analogue time machine to a different era.

Trick water gardens from 1619 featuring a 200 piece mechanical theater powered by water.

After local authorities changed the design, the building's architect, Le Corbusier, wanted nothing to do with it.

You've probably seen these distinctive orange-tiled columns on the big screen.

A statue of an astronomer gazes at the sky as a tribute to Caroline Herschel.

This monumental work of art symbolizes the coming together of a previously divided city.

A small hippo-shaped fountain in Berlin, Germany.

In the summer of 1957, a massive architectural exhibition showed off the future of urban living in this German neighborhood.

A historic fire call point.

The best bagels in Berlin are tucked away in an independent bookstore.

A haunting contrast of trains that both saved and took the lives of Jewish children in Nazi Germany.

From toys to kettles to scientific instruments, this German museum celebrates the beauty of 20th century design.

A socialist building dedicated to teachers showcases one of the largest Soviet mosaics in the world.

A prime example of socialist modernist architecture, wrapped in a enormous fresco about the media.

One of downtown Berlin's last reminders of its Communist past.

A pink sandstone column once used in ancient times to measure one's belly after a night of debauchery.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

The world's most active stratovolcano is almost always erupting.

A medieval wash house where people washed clothes in a river allegedly formed by the tears of a mourning nymph.

It took 40 years to build this Eden-like garden in Marrakech, later restored by Yves Saint-Laurent.

Fortune tellers, snake charmers, poets, and storytellers all gather on this historic square in Morocco.