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

Small monoliths of several varieties of stone sit alongside a wooded path in the Bronx.

Unusual books about food and drink abound in this 19th-century New York townhouse.

The end of the 4 Line is also the end of the line for 300,000 souls in one of NYC's most illustrious cemeteries.

This Wall Street bar was once a hub of revolutionary activity where Washington famously bid farewell to his troops.

Love, knishes, and best wishes from this legendary Lower East Side bakery.

This stone gatehouse was once the entrance to a historic mountain resort, and it had a cameo in a cheesy cult horror movie.

This once-grand marvel of engineering is now 41 miles of scenic hiking trail.

One of the earliest bowling lanes in the U.S. doubled as a sewing school during a time when women had little job opportunity.

The home of one of America's most wealthy industrialists is now a historic site that remembers a more decadent time in the country's history.

A collection of haunted artifacts chronicles the career of the world's most famous paranormal investigators.

The life of one of FDR's possible mistresses is preserved in her palatial Hudson Valley mansion.

What was once a trend-setting, phrase-coining icon of architectural splendor is now a rotting, forgotten hulk.

Home to the infamous "Typhoid Mary" and the worst loss of life in New York's history prior to September 11, 2001.

This unmarked and unloved Manhattan subway grate created one of the most iconic images in American cinema.

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

Order scoops of pandan, lychee, and black sesame at this family-run institution.

Mysterious installations bring levity and light to a sometimes stodgy city.

The only known Futuro house in North Carolina sits along a stretch of desolate highway on the Outer Banks.  .

Home to an eclectic collection of over 200 vintage motorcycles, Americana, and some of the most extraordinary antiques from all around the world.

The only geyser in the state of Pennsylvania is caused by pressure from an abandoned coal mine outside of the ghost town Centralia.

Hellam Township is reputed to feature seven remote gates, which when passed through in the right order, open an entrance to hell.

An outlandish shoe shaped house built by an eccentric millionaire.

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.