Most likely the largest and best-preserved dolmen in the Basque Country

The cathedral's live rooster and hen symbolize a renowned medieval miracle associated with Santo Domingo de la Calzada

This impressive chasm is one of the longest natural underground cavities in the world.

The water swaps direction twice a day, whipping into a frenzy of whirlpools and rapids.

Lankaster is a research and conservation center specializing in orchids and tropical plants, located near the city of Cartago.

The remains of Canada's earliest Chinese pioneers are interred along this picturesque point.

A monument stands at one of the starting lines of the Trans-Canada Highway, formerly the longest uninterrupted highway in the world.

The colorful, smiling concrete silos of Vancouver.

This Art Deco masterpiece has stood in for some of the most famous buildings in comic book history.

This exaggerated sculpture resembles a well known feature of Vancouver:

This expansive bridge in the Canadian wilderness was originally just built for friends.

The Siege of Naarden ended in 1814, but the cannonballs embedded in the town church remain.

French Time Capsule-19th Century home revealed to the public.

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

The cutest way to stay safe in traffic.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

The precise origins of this pink sandstone temple are unknown.

This Corsican Neolithic site is full of pre-Roman megalithic structures that may or may not be penises.