A cemetery in Barcelona's Poblenou district is home to this touching funerary statue, which depicts death in the form of a winged skeleton.

In a pedestrian tunnel on North Carolina State’s campus resides an expressive and artistic free-for-all.

The abandoned coal loading dock is a canvas for unsanctioned art.

Historical figures from New York City's Catholic community reside in Midtown.

This bleach-white graveyard overlooking the ocean is accessed through a tunnel.

Hordes of precariously balanced stone figures crowd the shores of the Hudson River.

This wall on a street corner in Lower Manhattan has been a blank canvas for a rotation of renowned artists since the 1980s.

A Victorian cemetery in the heart of Brooklyn remains a popular mecca of morbid curiosity.

This elaborate towering structure was once famed for its revolutionary height.

A former connection to City Island, it has been abandoned since the 1930s.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

These secluded and abandoned anti-aircraft defenses have become one the most scenic viewpoints in Barcelona.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This abandoned seaside fortress is now simply an imposing ruin being taken back by nature.

Rusting, graffiti-covered tanks litter the beach of this island, once used by the U.S. military for target practice.

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

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

Final resting place of Typhoid Mary.

A layered tribute to the work of mosaicist Isaiah Zagar.

World's first "penitentiary," meant to be humane, drove men insane.