This amazing pedestrian suspension bridge in the Swiss Alps would give Indiana Jones nightmares.

Caves famous for the dragon-slaying saint who lived there.

This deceptively salty lake looks like blushing pink lemonade.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

The tallest sea cliffs on the Southern Hemisphere are a climber's worst nightmare.

A valley of unique erosion patterns lends to a view like nothing on Earth.

The highest waterfall in Italy is only "turned on" five times a year.

A miniature train-ride through Slovenia's largest cave system.

The most alien-looking place on Earth.

The vast, legendary catacombs hold secrets much stranger than stacked bones.

A geological oddity topped with a 2,000-year-old pagan temple.

Malaysian fireflies create a dazzling display as thousands light up in unison.

A spectacular cave and a beguiling lake.

The world's highest and most dangerous infinity pool lies at the precipice of Victoria Falls.

Countless stories attempt to explain Poland's mysterious J-shaped trees.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

Inspired by "The Starry Night" this Dutch bike path turns into a glowing work of art each night.

Even France's favorite aquatic son Jacques Cousteau, couldn't get to the bottom of it.

Wondrous sandstone hoodoos where Native Americans collected clay for pottery, 9,000 years ago.

A popular shrine where the Blessed Virgin allegedly appeared in 1830, displaying a holy armchair and two incorruptible remains of Lady Saints.

A fantastical group of cliffside stairways, bridges, and twisting paths carved out of stone provide a surreal coastal hike.