Wall Street has a new heroine, a bronze statue of a small but fierce girl.

The remains of one of Wales’ great medieval buildings, with a pub in the cellar.

The castle still holds traces of the abandoned Roman fort it was built atop.

This one-of-a-kind Roman arch is not actually dedicated to the god Janus.

This ancient market is often referred to as the oldest shopping mall in the world.

The underground sanctuary of a mysterious ancient cult.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

An abandoned relic of the city's failed experiment with below ground transit.

Historical structures and natural wonders await visitors to this preserve.

This magnificent Cincinnati graveyard is also a popular public park.

Mussolini gave Cincinnati a bronze statue of Romulus and Remus suckling at a wolf's teats.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

What is it about mushrooms that makes people wish they lived inside of them?

Created by four famous men (Henry Hobson Richardson, Frederick Law Olmsted, Calvert Vaux and Thomas Story Kirkbride), the beautifully designed Buffalo State Asylum was resurrected as a hotel and art center...but still boasts a ghost story or two!

The only boathouse Frank Lloyd Wright ever designed was also the only unbuilt structure in his famous Wasmuth Portfolio, until 2007.

This former hub for crafty philosophers was founded by a writer who died aboard the infamous RMS Lusitania.

This Buffalo museum hides an Art Deco gas station designed by Frank Lloyd Wright.

This unique crypt designed by Frank Lloyd Wright for his longtime friend was not completed in either man's lifetime.

Ruins of a once-prized railroad station in New York.

This cemetery has graves dating back to the 17th century, including the city's oldest carved tombstone and an ominous cryptogram.

Famously misunderstood wonder of the ancient world

An unusual round church in London with a Templar past.

The rockpile was the founding landmark for the town of Gillette, and is now the home of the region's history.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.