One of the oldest lighthouses in the world, this structure was built more than 800 years ago.

Balconies that have a most unusual accent.

A relic of Poland's shipbuilding past, reborn as a sky-high lookout.

A merchant court dedicated to the fictitious King Arthur is heavily adorned with bizarre Renaissance art.

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

During the renovation of this bas-relief, the constructors added one unusual element.

These rare statues are one of the few remaining material witnesses to Old Prussian culture.

The last used bookstore in Downtown San Francisco is one of the smallest bookstores just about anywhere.

This massive Art Deco-inspired mural was the world's largest augmented reality artwork at the time of its completion.

An acoustic anomaly with a mysterious cause sits in the heart of Tulsa.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Belly up to the bar in Cowtown, don't forget to buy some boots.

A modernist landscape of water and sci-fi concrete.

This giant mimetic milk bottle has encouraged Route 66 travelers to choose dairy since 1948.

Legacy of the earthquake that nearly wiped Lisbon off the face of the Earth.

Sip cherry liqueur at a bar dating back to 1840.

The scorched Lisbon church that survived two earthquakes and a massive fire.

This unique architectural wonder is also tied to one of the 20th-century's most renowned writers.

Europe's largest collection of matchbox designs is a fascinating exploration of the cultural history of the world.

The extravagance of Portugal’s "Pink Palace" resulted in a noble title being awarded to its owner.

The signs of a long buried road can still be found hidden beneath a London sewer grate.

The best place in the world to buy tinned fish.

This stunning concert hall has become a symbol of Iceland's national recovery.

This tiny museum's sizable collection is jammed into a former underground public toilet.