This unassuming office building is home to what was once the world's largest pendulum clock.

Colloquially known as “piss alley,” this narrow street filled with tiny bars and barbecue stands looks like it was pulled straight out of “Blade Runner.”

Not quite the menace it once was, this monster still has some chops.

The world's longest tunnel with an undersea section.

Inaccessible by foot, Japan's most secluded train station sits in the middle of nowhere.

An open-air museum exhibiting a total of 52 century-old buildings, recreating Hokkaido’s “pioneer village.”

This 46-foot-tall carving of a legendary Māori navigator can only be visited by boat.

The explorer Captain Cook may have named it White Island, but the Maori call it Te Puia o Whakaari – The Dramatic Volcano.

This electric green sulphur lake in New Zealand looks like a cartoonish radioactive dump site.

The once and future home of New Zealand's famed Pink and White Terraces.

Deadly scalding and one of the largest hot springs in the world.

An immersive Māori village where you can learn history and heritage through dance, ceremony, song, architecture, and food.

Major tourist destination known for its bubbling mud-pools and hot thermal springs.

Handcrafted thermal spa washes away each night with the tide.

A New Zealand communications tower stands as the tallest structure in the Southern Hemisphere.

A galaxy of glowworms—larvae of a gnat—hides deep in the belly of these caves.

A heritage park that explores the history and ecology of Whangārei.

Largest Kauri tree in New Zealand.

Raging waters have created a strange geological site that looks like something off of a progressive rock album cover.

A lush indoor jungle fills this bustling Madrid transportation hub.

Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Single runway interrupted by a busy road that cuts across its middle.

There was a top secret plan during World War II to seal a group of soldiers inside the rock.

Red, white, and blue painted steps along with a Union Jack celebrate the outcome of Gibraltar's 1967 referendum.