An underwater road considered a possible Atlantis location.

The iconic Manhattan corner that was once the site of the Beastie Boys' fake clothing store.

The world’s oldest and biggest bookstore stocking only mystery, crime fiction, espionage, and thrillers.

Try not to get slimed in Tribeca.

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

Cryptid lake monster honored with its own monument.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

Some big-name visitors have patronized this small-town library named for an oil man's daughter.

Founded in 1788, this Rhode Island institution is the oldest operating general store in America.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

A single light illuminates one man's overshadowed contributions to street lamp history.

An unexpected Easter egg lurks in the background of a cherub wall relief at the Breakers mansion.

A 60-room castle constructed by a horse-racing heir.

The idyllic colonial home of the artist behind the famous portraits of George Washington and Thomas Jefferson.

The world's largest public collection of PEZ memorabilia.

While many places make the claim, the Library of Congress says this restaurant is the birthplace of the hamburger.

The kind of mixed-up place that drives archaeologists crazy.

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

The place where Samuel "Slater the Traitor" brought the Industrial Revolution to America.

This plaque honors the unsung Black songstress once known as the “greatest singer of her race.”

One believer transformed a local curiosity into proof of Vikings on the Great Plains.

A museum dedicated to exhibiting remarkable outsider art.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

This mysterious artificial cave has long puzzled New Englanders.