This abandoned five-star hotel is now a five-star urban exploration destination.

A perfectly circular lake is formed by the crater of an ancient underwater volcano.

Europe's oldest still-operational tea farm also boasts a spectacular view.

Rainwater transformed this old quarry into a peaceful pond you won't find in most tourist books.

Southern Italy's spinning top village.

Packed with geological formations, an ancient river, and taxidermied seals, this overlooked coastal cave system is worth a spelunk.

At an estimated 3,800 years old, this olive tree is one of the oldest on earth.

This bunker in northern France was built by Nazi German forces with the intention of launching up to 50 V2 rockets at London each day.

This disused boat elevator was saved from the scrap heap so that visitors could tour its rusting skeleton.

These crumbling Nazi artillery bunkers are now fair game for massive graffiti projects.

This fairytale castle was built as a show of power but was nearly torn down thanks to its history of torture.

This narrow Ghent alleyway is an officially sanctioned street art tunnel.

The unique waterfall in Iceland's south features a backdrop of geometric black lava columns.

This fairytale-like structure is the last turf church ever constructed in Iceland.

Iceland's largest lagoon is home to stunning multi-colored icebergs.

This replica Viking village was created for a film that was never shot and is now open to visitors.

A giant red chair bolted to a rock on a remote mossy hillside in Iceland.

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

This canyon is comprised of gorgeous waters and magnificent basalt columns.

The most powerful waterfall in all of Europe.

These ominous lava formations were said to be an entrance to the netherworld so of course they inspired a famous metal band.

This volcanic cave lake is essentially hard proof that Iceland is the most magical place on Earth.

A sulfuric martian landscape that looks far better than it smells.

In Northeastern Iceland lies something of an oxymoron: a steaming desert.