An 80-year-old plane tree is devouring an iron bench at Ireland's oldest law school.

A fortified city, home to a remaining population of five families

Rocky Atlantic beach home to a stunning stone arch.

Each spring, a dreamlike carpet of bluebells overtakes the forest floor.

One of the smallest bookstores on the planet.

At night, bats patrol this magnificent 18th-century space in search of book-eating pests.

These small sculptures pay homage to the lovable star of an iconic Argentine comic strip.

Crumbling crypts and overgrown graves rise just out of arm's reach in this forgotten Buenos Aires graveyard.

Visit this odd display of indigenous style in Argentine wine country.

This giant power line tower is a robot that can express its moods in neon.

105-foot wide giant metallic flower blooms anew every day in the heart of Buenos Aires.

Museum housed in underground tunnels that date back to Buenos Aires's earliest settlements.

A serpentine highway twists and turns over the treacherous Norwegian Sea.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

A rare surviving Victorian greenhouse designed specifically to house giant water lilies.

This Stockholm light tower can be controlled by anyone with a smartphone.

Stockholm's decidedly unique public transit system has doubled as the world's longest art gallery for decades.

A hidden bathhouse in one of Stockholm's oldest and busiest neighborhoods is open to anyone who can find it.

A wunderkammer of gold and silver reliquaries and ancient saintly bones.

This Croatian fairytale castle is slowly falling apart thanks to years of neglect.

A scale model of the world's largest existing lensed telescope.

A 1:42 scale model of the world's second largest lensed telescope.

A modern temple with an ancient philosophy.

Six times a day a train runs right through the middle of this Thai street market, sending vendors scrambling.