This peculiar museum offers hands-on interaction with seemingly intangible principles of mathematics.

Four-story slides send people whizzing through the math department at this Munich university.

The bells remain in a shattered heap exactly as they fell when the church was bombed in World War II.

This East German military command bunker was ready for World War III.

The real life town from the Pied Piper of Hamelin has a mechanical puppet show that retells the famous story many times a day.

A kindergarten shaped like a cat with a tail that's a slide.

This historic little railroad runs through some of the most beautiful scenery in Germany.

A former Nazi lookout tower with a magnificent view of the Rhineland.

These brass bunnies honor the rabbits that dominated the no-man's-land around the Berlin Wall.

This historic funicular system combines the old with the new while offering delightful views over the surrounding valley.

From Ancient Rome to WWII, Neupfarrplatz has over 2,000 years of history underneath its main square.

Crop circles inspired this whimsical garden in Germany.

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

A small man-controlled waterfall powers an Art Nouveau elevator and is accessed via narrow gauge, solar-powered tramway.

Tiny memorials honor individual victims of the Holocaust.

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

An amusement park on the grounds of an unused nuclear power plant, with a swing ride inside the cooling tower.

The largest brick bridge in the world.

A stunning two-story timepiece within a medieval Brick Gothic church.

This century-old cinema house has a marquee that has been hand painted by a single man for over 25 years.

An ornate century-old elevator still connects the two halves of Bad Schandau.

The ruined remains of the airport Claus von Stauffenberg departed in his failed attempt to kill Adolf Hitler.

This former Nazi castle was built as a school to train what would have been the future of the Third Reich.

Go surfing on this urban wave, "hacked" by local surfers.