This tiny museum's sizable collection is jammed into a former underground public toilet.

One of the tallest buildings in Iceland, and perhaps, the most visually impressive.

An encyclopedic collection of mammal penises.

Millions of numbers carved in glass represent the tattoos forced upon victims.

This massive tea kettle was once a promotional stunt for the Oriental Teashop.

A morbid secret lies hidden within the beautiful walls of the Boston Athenaeum.

Dedicated to a colonial woman who was hanged for being a Quaker.

A men’s restroom became a sandwich shop.

Mrs. Mallard and her brood are a beloved fixture in Boston Public Garden.

Created by a local artist, these quirky sculptures each have their own names and personalities.

This bronze sculpture was inspired by a photograph of Martin Luther King Jr. and his wife embracing after he won the Nobel Peace Prize.

Preserving the memory of the narrow railroads that once crisscrossed the state of Maine.

Friction between grains of sand cause a curious "singing" sound.

An eccentric inventor's castle home with its own indoor weather system.

Statue in Salem of the woman who starred as the witch Samantha in the sitcom "Bewitched."

This Gothic castle was inspired by Erik the Red's Viking residence at Brattahlid in Greenland.

Ornate and macabre headstone in one of the country's oldest cemeteries.

Louisa May Alcott based “Little Women” on her experiences growing up in this house with her sisters.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

Final resting place of one of the classic authors of horror literature.

Rumors of the occult haunt this upscale 1920s hotel.

Rhode Island's tallest building bears a resemblance to the "Daily Planet" building and has been empty for more than five years.

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

A 19th century library favored by Edgar Allan Poe and H.P. Lovecraft, known by locals as "the Ath."