This 600-year-old home seems to defy physics.

A rare water-powered funicular, it uses a huge tank of water and gravity to do its work.

A neighborhood church's unusual abstract stained glass was the final project of avant-garde artist Jean Cocteau.

This former insane asylum now holds a pathological anatomy museum.

You may recognize this beautiful grove within Kaitoke Regional Park as location of the house of Elrond.

This colorful and fiery mural depicts the Irish folk story of the beloved hero Cuchulain.

A Faraday Cage protects cars from a nearby high-power transmitter.

Named after the German word for "a longingness to travel," this park brings together thousands of city and street signs from around the world.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

A strange rock formation with numerous legends trying to explain it.

This castle played host to the largest great hall found in medieval Central Europe.

This tablet indicates where the tragic monarch returned to begin her tumultuous downfall.

An abandoned subway tunnel that could have reinvigorated Staten Island still lies somewhere beneath this Brooklyn park.

This enchanting mountain plateau celebrates spooky local folklore.

This jaw-dropping 19th-century bridge uses its reflection to form what appears to be a perfect circle.

A Swiss amusement park entirely dedicated to the theory of ancient astronauts.

A once-thriving hotel in the Swiss Alps couldn't compete with climate change.

A scale rocket of an Ariane 5 rocket serves as a monument to a pioneer of space science.

An engineering wonder at Pillnitz Castle protects a precious 230-year-old flowering shrub.

Dedicated to the history of mining and minting in a region rich in silver and radium.

The stones of this formerly witch-obsessed castle were used to build a church.

For centuries, Germans have been dancing in trees.

WWII rocket launchpad in rural Germany and site of operation backfire.

Model Trains and Much More in Hamburg.