The ruins of this medieval castle on a foggy hill tell the story of a once-mighty empire.

This restaurant offers a side of antiques, curios, and a bathroom chock full of owls.

This subterranean oyster house has been the pearl of Grand Central Station since 1913.

Despite many attempts to finish this overpass, it has been abandoned since the 1970s.

A whimsical tower with a spiral staircase, inspired by the Space Age and the Möbius strip.

This unassuming retro burger joint was billed as “diner of the future” at the 1939 World's Fair.

Songwriter Leon Russell transformed this church into a recording studio used by many legendary musicians.

Once in disrepair, the house where the 1983 film was shot has been restored and turned into a museum.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

This riverside restaurant has been serving customers since 1146.

Legend has it fairies gathered at the site of this medieval castle.

A brilliant turquoise lake in the mountains.

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

This incredible collection of vintage pinball machines can be played at 25 cents a pop.

The land is full of geologic eye candy, such as otherworldly spires, mushroom-shaped hoodoos, and prehistoric fossils.

The Master of Magnetism dominates the walls of a scrap metal yard to keep graffiti artists at bay.

This beacon for pre-radar pilots once guided Charles Lindbergh to a safe touchdown in Tulsa.

A former chicken restaurant that doubled as a speakeasy is now a quirky home full of wonderfully strange traditions.

High winds can make this one scary landing.

This small monument marks the divide between the Atlantic and Indian Oceans at the southernmost tip of Africa.

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

Its vintage camera collection gives a snapshot of the past as viewed through a photographic lens.

A quiet, gothic haven nestled between Pittsburgh's Squirrel Hill and Point Breeze neighborhoods.

Colorful concentric circles honor a small Croatian town's supposed spot at the nucleus of it all.