The most disputed archipelago in the world.

The tangled roots of a giant banyan tree have fully reclaimed the ruins of this abandoned warehouse.

Sometimes known as the little Niagara Falls of the Philippines.

Hidden deep within a Filipino jungle is an incredible waterfall that plunges into a dazzling blue-green pool.

Five miles of underground river link lake to ocean.

This eerie abandoned building with a dark history is said to be one of the most haunted places in the Philippines.

This curious fresh and salt water lake holds a secret that draws in deep divers from around the world.

An island in the middle of a lake, in the middle of a volcano, in the middle of a bigger lake, in the middle of a bigger island, in an archipelago, in the Pacific Ocean.

A humble ancient well where Scottish knight, Sir William Wallace, took his final drink.

A once extravagant mansion, now reduced to ruin.

This tiny train shuttles passengers to one of Northern Ireland's most spectacular sights.

This waterfall is one of the most spectacular natural features in the Scottish Lowlands.

This ethereal, rainforest-like gorge is home to waterfalls, quaint bridges, and fairy folk.

The location of the Bridge of Death and the Gorge of Eternal Peril in "Monty Python and the Holy Grail."

This lovely Scottish nature walk leads to the source of a local legend.

A failed infrastructure project now owns this unique moniker.

This isolated island is often capped by its own fluffy cloud.

The bright red stripes streaking across the rocks are the star feature at this Icelandic waterfall.

Surrounded by ash fields in Iceland, an impossibly verdant valley looks like something out of a fairytale.

Travel deep inside of Europe's second largest glacier in the world's largest man-made ice cave.

Two New York rooftops are home to the largest rooftop soil farms in the world.

A once crucial portion of the Long Island railroad still lays abandoned, waiting to be turned into an urban park.

The Hanshin Expressway goes right through its 5th, 6th, and 7th floors.

The Canaima airstrip in Venezuela keeps an antique DC 3 plane in its camp.