19th-century operating theatre in which the use of ether was first demonstrated - plus, a skeleton and a mummy!

A men’s restroom became a sandwich shop.

This private residence was the template for one of the most beloved television homes of all time.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

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

Restaurant in a 1741 farmhouse that touts the story of its haunting on its menus.

The childhood home of the meat inspector who would become the face of America.

The once abandoned ruins of a Victorian beachside amusement park are now back in working order.

A museum designed by and dedicated to P.T. Barnum in the town where he is buried.

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

A vast collection of rare books, manuscripts & extraordinary objects illustrating the history of medicine.

This "thrice-cursed" island is allegedly home to Captain Kidd's lost treasure.

The location of the pie company that gave a classic toy its name is now a parking lot.

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

An archival collection of over 2,200 case studies which includes human brain specimens and tumor specimens.

Oldest existing church in New York and the inspiration for Washington Irving's "The Legend of Sleepy Hollow."

Yo, Adrian!

A sulfuric martian landscape that looks far better than it smells.

Mysterious stone tower featured in many alternative histories of the New World.

Three and a half miles of cliffs, rocky beaches, Gilded Age mansions and 40 Steps to nowhere in particular.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.