A swing to dangle you off the very edge.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

From sax to spuds, get 'em all at this landmark music establishment.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The world's only international cryptozoology museum is host to an unrivaled collection of mysterious objects.

This serene wooded hilltop has a dark history as the climactic point of the Swedish witch trials.

Quaint, disturbing, and macabre objects are all on display at this intriguing collection of medical instruments from bygone eras.

This ghost town was once a cult-like religious utopian settlement.

The fifth-longest natural arch in the world, and the longest outside China.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

A surprisingly beautiful abandoned World War II military base in East Greenland.

Hundreds of glow-in-the-dark objects light up a museum in a historic zinc mine.

Locals place their offerings on this nightmarish gnarled tree so the witches won't summon another storm.

This Bronze Age burial mound used to be called "Robin Hood’s Piss-Pot" until it was renamed by spoilsport Victorians.

A spooky spot along the road where things mysteriously seem to move uphill by themselves.

Victorian-era Londoners really wanted to believe this 17th-century cistern was actually an ancient artifact.

This working replica of the 'Friends' coffee shop is more accurate to the show than the set itself.

The largest greenhouse in the world is home to over one million types of plants.

Half-eaten food on display at an English café.

On this wooded path, a stained-glass window creates a spellbinding forest cathedral.

London's only public statue of the much-married monarch adorns the gate to St Bartholomew’s Hospital.

A plaque hangs near the execution place of the Scottish Independence leader famously depicted in "Braveheart."

It's a mystery why these remains were found with no traces of their bodies in sight.