Epicurean and holy traditions converge in what may be the oldest restaurant in Europe.

A giant interactive periodic table with real samples of the elements.

Bullet holes in the church wall are a reminder of the violence that followed the assassination of a high-ranking Nazi officer.

This automated sculpture of two men peeing will spell out text messages with their micturition.

This doorless 20th-century elevator doesn't stop or slow down.

A Jenga-style cylindrical tower of books that appears to go on forever.

The rusted creatures wait to be discovered in Prague's botanical garden.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

Ugly 18th-century dwarf statues living in a perfectly landscaped Austrian garden.

These bronze pamphlets remember a remarkable group of Germans who fearlessly opposed the Nazis in the very center of their power.

A stairway to heaven, or to nowhere at all.

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

An Orthodox church inside a small "Garden of Eden" built by a man who had a vision.

The prototype for all Nazi concentration camps.