An abstract monument to a symphonic composer.

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

This house's itty bitty size means no humans allowed.

Walk into an underground archeological dig, the site of the Roman Forum that was once the center of Valencia.

The twin towers in this Chicago fountain use 50 foot tall video screens to spit on people.

This sound-art installation features songs composed using only the Mid-Hudson Bridge as an instrument.

Elevated freight railway turned wildly successful urban park.

More than 250 sakes are available in an izakaya hidden in the basement of a Midtown office building.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Finally, you don't have to be a pious Swedish seaman to relax like one.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

An abandoned guano-mining city in the South Pacific.

The metal truss bridge served as the sole entry point to an "isolation island" for smallpox outbreaks throughout the 1870s and early 1940s.

Giant topiary dog once played a role in a terrorist bomb plot.

This illuminated sign was the first of its kind in Canada and remains a vestige of the Atomic Age.

Come for the flowers, stay for the bats!

A sharp bend in a dramatic river canyon cut through red rocks.

Most-visited and most-photographed slot canyon in the American Southwest.

Now a public art piece, this curious metal feature originally advertised a tinsmith's services.

These locks on North America’s oldest canal are named after a porcine rock formation.

A sprawling Victorian farm that has been surrounded by a capital city is one of Canada's greatest treasures.

A boardwalk winds above this beautiful bog full of wildlife and a rare type of turtle.

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

Louise Bourgeois' 30-foot-tall steel spider sculpture.