Madrid's romantically ornate crystal palace has been offering shelter to plants and art for over a century.

Gaudí's famously flamboyant architectural style is on full display in this sprawling park and garden.

Construction of Barcelona's iconic (but controversial) church is expected to be completed in 2026—a century after the death of its architect.

Eat burgers beneath gargantuan taxidermy and thousands of dollar bills in Utah's oldest continuously-operating bar.

The mysterious image is believed to show Edward Hyde, 3rd Earl of Clarendon, in a beautiful blue dress.

This Manhattan museum houses one of the largest collections of Spanish art and manuscripts outside of Spain.

This historic building housed the surviving crew members of the Titanic, who were left destitute after the wreck.

The highest point on the island known for buildings that touch the sky.

A dark patch of the ceiling at Grand Central Terminal which was not restored is still stained brown by tobacco.

Little Red Lighthouse under the George Washington Bridge.

The most confusing clock in New York.

Salute the leader of the proletariat.

Rummage through this sunken ship, but leave your scuba gear at home.

A small peaceful park and waterfall tucked amid the urban grind of Midtown Manhattan.

Touching mementoes from those who didn't make it back from World War I still hang in one of New York's oldest bars.

The fanciest public restroom in New York City boasts fresh flowers, art, and a classical music soundtrack.

Visit the monolithic tomb of America's most famous general.

An artist's cute bronze subway sculptures belie his violent artistic past.

Blighted Irish field and the ruins of a 19th-century cottage on the edge of urban Manhattan.

Wine bottle sculpture with a ship's stateroom inside.

A bit of retro transportation flair preserved in the world's largest department store.

This mosaic dedicated to John Lennon was tended for years by a Beatles super-fan.

A popular European tradition makes its way to the states on one of America's most famous bridges.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.