This former farm In northern Iceland is now a museum, where visitors can tour beautifully-preserved turf houses.

A spectacular Petrine Baroque summer palace commissioned for Catherine I by Peter the Great.

The design of this beautifully crafted building was inspired by Norwegian glaciers.

Macabre astrological automaton clock dating to the late 1400s.

Swiss vineyards in a UNESCO heritage site.

Resting in the middle of an Austrian river, this sci-fi "island" lets people cross in neon style.

Where Venice's gondolas go for a tune-up.

This Renaissance palace features a unique architectural design and is now home to the Ferrara National Art Gallery.

This uniquely designed bridge served as the city gate for Comacchio.

This massive subterranean fissure is known as the "underground Grand Canyon."

Over the dunes of the Empty Quarter, the mysterious music of the desert.

This daunting 1st century fortress was purportedly the site of one of the most dramatic revolts of the Jewish-Roman wars.

One of the most photographed locations in the entire city.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

A long-buried ancient ruin unearthed right in the middle of the city.

Single runway interrupted by a busy road that cuts across its middle.

Along the most northwestern point in Africa is an ancient cave surrounded by legends.

A museum of tiny buildings in the tiny country of Andorra.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

This historic island prison holds one of the dungeons from the Count of Monte Cristo even though it is a work of fiction.

A close look reveals that the Scottish monument is just slightly off-kilter.

This previously dilapidated alleyway has been transformed into one of Melbourne's finest hidden art locations.

Buddha shrines hide within dark tunnels at this unique forest temple.

This large stone off the coast of Martinique had a brief career in the Royal Navy.