This antique thermometer honors the creator of the first universal temperature scale.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

Ancient man-made caves underneath small town Belgium.

The most visited, and possibly most controversial, museum in Germany.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

This extremely narrow tenement boasts a maximum occupancy of just two.

A historic freight system that found the true gold rush is in tourism.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

An essential stop before plundering, BYO Cutlass.

A massive sea stack famous for its appearance in The Goonies.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Featuring a casually threatening atmosphere along with dessert and coffee to die for.

Hiding the longest subterranean river known in the world.

The struggle of a small Dutch island against the sea.

Building Men of War and Indiamen from Holland's Golden Age.

A castle from the Holy Roman Empire that hosts traveling youth... in its stables.

A moving memorial to the fallen and missing from WWI trenches.

Christ's blood preserved in a Belgian town.

A giant bug impaled on a 75-foot-tall needle.

Old Danish castle immortalized in Shakespeare's Hamlet.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.