A Manhattan office building is home to the world's largest chess board.

This titanic steel chain linking two buildings was installed without permission but instantly beloved.

A towering monument in Spain has proven to be more labor-intensive than initially planned.

A curious carving hides on a marble column in the Mosque-Cathedral of Córdoba.

This former charity hospital for elderly clergy houses some of Seville’s most treasured paintings.

A prehistoric landscape hidden in the cliffs of Maha'ulepu.

This former luxury resort in Kaua'i is now an abandoned relic.

The final resting place of the great navigator, or maybe his brother.

An ancient Egyptian temple in the middle of Madrid, Spain.

Commonly acknowledged as the only public monument to the Devil himself.

Sniff the Titan Arum's rotting flesh.

This hidden sculpture garden full of Wild West art is one of San Antonio's best-kept secrets.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Two small markers remember the Alamo's feline protectors.

Three hundred years of preserved Spanish colonial history in San Antonio.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The first piece of public art dedicated to LGBT rights.

From this desk Al Hirschfeld drew his influential caricatures of the 20th century's Broadway stars.

Crammed into a Baltimore row house is an oddities shop that sells everything from skulls to dead insects.

This bug-eyed water wheel uses the power of the Sun to clean up Baltimore Harbor.

Huge abstract sculptures of the Puerto Rican Flag.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

Once called the "Polish Gold Coast" it is an icon of the neighborhood that bears its same name.

A strange and haunting monument of unknown origin in the historic Graceland Cemetery.