The inspiration for H.P. Lovecraft's horror stories and Batman's Arkham Asylum is now a condominium complex.

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

Continuing the tradition of the dime museum in style.

The site of the climactic scene from the classic horror film is now a historic landmark.

Eighteen miniature death-scene dioramas.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

Giant Redwood-themed cafeteria operates under the golden rule, "Dine Free Unless Delighted."

Enormous lake at the bottom of a unique cave system.

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

This lower Manhattan bar is set up in an old bank vault that rests beneath a skyscraper that hides even more historic splendor.

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

This shop specializes in oddities and Victorian-inspired wonders.

A winding path built in secret on the edge of the continent.

The United States Capitol's former columns still stand.

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

A walk through the historic city center, under the streets of Seattle.

Medical and zoological curiosities for sale.

This Boston medical museum features the skull of the famous medical case of Phineas Gage.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

The oldest family-run luncheonette in New York, last renovated in 1948, still serves food and drinks the old-fashioned way.

The installation’s official name, “You Who Are Getting Obliterated in the Dancing Swarm of Fireflies,” says it all.

Try not to get slimed in Tribeca.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.