This large sand dune in the Netherlands is home to wind-whipped trees with "floating" roots.

The struggle of a small Dutch island against the sea.

The gargoyles and grotesques of the 21st century are here—22 emoji built into a new building in the Netherlands.

The world's longest wildlife overpass provides Hilversum's critters with a safe alternative to trying their luck on the roadway.

Unchanged for centuries, this medieval library keeps its books in chains.

This stately council chamber hasn't changed since 1545.

Remarkably preserved body discovered in a peat bog.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

This natural wonder drops 16 stories straight down through rare flora and streaming waterfalls.

One person's lost luggage is another person's treasure.

This structure among the trees was the result of divine inspiration.

This defunct, fortress-like prison has been the setting for several movies.

All that's left of the quintessential "cabin in the woods."

The small cave that housed Tennessee's "first citizen."

This miniature take on the Kremlin is one Dutch man's retirement project.

Go inside a revolutionary, cage-less zoo where 35 species live and some of them roam free alongside their human visitors.

This Dutch windmill has its roots in an American invention.

A bizarre form of natural mummification was discovered in the church of this Frisian village.

The nerve center of a massive, state-of-the art radio telescope that sprawls across Western Europe.

Once connected to the outside world by a single train track, this ghost town is looked after by the National Park Service.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

An overgrown garden stands as a grim marker of an unrealized dream.

The oldest arched-covered bridge in Virginia has truly withstood the test of time.

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.