These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

These experimental weapons brought World War II to Nebraska as well as 26 other U.S. states.

This automated sculpture of two men peeing will spell out text messages with their micturition.

This once rural mansion now sits in the heart of the city.

This morbid, delightful curiosity shop offers everything from animal bones to human teeth.

A New Hampshire grave with a grudge.

The dress young Pierce wore prior to his breeching ceremony in the early 1800s is now on display for all to see.

The Old Man of the Mountain’s less-famous, but still beloved little brother is said to resemble a leader of the Abenaki tribe.

This library and museum is dedicated to the life and literature of the Indianapolis native author.

A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

A tiny, unassuming park in Tampa that belongs to the Republic of Cuba.

A memorial to legendary newsman, publisher, and owner of La Gaceta, the only trilingual newspaper in the U.S.

A little lighthouse in New York City, surrounded by mysterious stories of insanity-driven construction.

A crumbling hospital from the 1850s on Roosevelt Island.

The feral felines of Roosevelt Island have a small army of allies and an abandoned hospital all to themselves.

One of only two commuter aerial tramways in the United States.

Read a book next to a Midtown waterfall.

A former insane asylum despised by Nelly Bly and Charles Dickens is now fashionable apartments.

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

10,000 flowered plants bloom in the City of Roses.

The word "Watergate" will forever be associated with the infamous scandal in 1972, but this fountain is famous in its own right.

A historic arena where the Beatles played their first concert in the U.S.

Art deco landmark on the outskirts of Washington, D.C.