Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

This statue points to another unusual companion work of art often overlooked by visitors.

One of Antoni Gaudí's most classic buildings is well-known for its "dragon-back" design.

This stunning iron gate designed by Modernist architect Antoni Gaudí is filled with mythic symbolism.

Red frames showcase remnants of one of New York's original subway stations.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

A toweringly silly piece of modern art has been delighting locals since the 1980s.

For two weeks every June, fireflies in the Smoky Mountains perform an astonishing light show.

This is one really big nut.

A brick-paved former section of the historic coast-to-coast highway.

If you don't look closely, you might mistake this sculpture for just another passenger waiting at the airport.

An interesting decoration on this historic site, this weathervane comes with as many legends as it does questions.

The American Revolution was galvanized into serious action due to the tragic clash with British soldiers that occurred at this location.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

Believed to be the birthplace of the United States Marine Corps.

An Irish Memorial commemorating those who perished due to potato blight.

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

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

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

Alexander Hamilton’s creation caused quite a bit of controversy.

A journey begins with a single step, and for many, the road-trip of a lifetime started at this Chicago intersection.

Down a pint of ale where the Bishop of Ely's servants slept in 1546.

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

This colorful gate stands as an entrance to the walled city of Old San Juan.