Quirky castle designed by the American actor best known for portraying Sherlock Holmes on stage.

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

I-95's Tijuana-style celebration of kitsch at the Carolina border.

One of only two remaining Victorian-era greenhouses in New York.

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

The Father of the Erie Canal has a magnificent grave marker that redefines the term "final resting place."

A heartbreaking monument showing the last morning in the life of Jane Griffith.

A mass grave for victims of one of the city’s worst fires.

Final resting place of the immigrant who brought artificial seltzer water to America.

This forgotten graveyard in rural New York State once served a pioneering hospital.

Beneath the mossy overgrowth covering this once-sprawling campus lies decades of history and the secrets that come with it.

A formerly abandoned mental institute, now back in business.

A hospital that became a college, was abandoned again, and finally became a gated community.

An unrealized dream to wirelessly electrify the entire Earth.

A large camera obscura, constructed entirely from digitally fabricated components.

A former poultry store that looks like a giant duck and is one of the "seven wonders" of Long Island.

A tribute to the hard-working men and women of Grumman, who crafted F-14 fighter jets.

A restored Shell gas station from 1937 that includes a tow truck, the original gas pumps, and the original office.

A century ago, aspiring socialites climbed on this cement beast with the hopes of marrying a millionaire.

A rare forest habitat nestled behind two sand dunes.

A historic lighthouse steeped in rumors of ghost and pirate stories.

The site of a tragic massacre that spawned a multimedia franchise.

This outpost of America's most popular fast-food restaurant is housed inside a palatial mansion.

An eccentric playboy's astounding natural history collection.