Step inside the first house designed by Catalan architect Antoni Gaudí, considered to be one of the first Art Nouveau buildings.

Every summer local children form "pysja patrols" to save young birds that have wandered from their nests.

A neo-Gothic mansion now houses a wunderkammer of analog tech that hits on all the senses.

The Netherlands is home to a bridge printed out of reinforced concrete.

Scientists use one of the saltiest bodies of water on Earth as a terrestrial base for studying water on Mars.

Croatia's "hairy stone" fortress is one of the most well preserved Istrian castles.

Things aren't quite what they seem at this mind-bending museum.

A former bank seized as a sniper vantage point during the Bosnian War is now a secret graffiti art gallery.

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

The complex has been abandoned since the Croatian War of Independence, barring a stint as a set for 'Game of Thrones.'

The now-overgrown beach resort was once frequented by Yugoslav military elite.

This ruined fortress was the stronghold for a persecuted medieval leader and his infamous Assassins.

A public urinal so pretty, it was declared a national monument.

A domed disco abandoned since the '70s now attracts artists and explorers under its unique roof.

The world's only flying boat museum honors a small Irish village that sent 20th-century aviation to new heights.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

At this unusual park, domes, ladders, chairs, and more are made from trees.

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

A German town is growing a building out of trees.

For centuries, Germans have been dancing in trees.

Street artists transformed an abandoned air vent into the beloved Star Wars robot.

The secret medieval communication system will whisk your words above the noise of the crowd.

The world's tallest box hedge is found in a delightful garden.

The world's oldest grape-producing vine has survived four centuries of turmoil and even has its own anthem.