The "All-Seeing Eye of God" symbol on this library is a clue to one of the many former lives of this building.

A monument marks the location of the first successful steamboat demonstration.

Walk through the actual strap iron cells and solitary chambers of Arizona Territory’s first prison.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

A sanctuary for sickly, stray, or wounded donkeys.

Fascinating town where normal life interfaces with the occult.

A priceless collection of the Nation's cryptologic history.

America's post-nuclear-attack chambers of Congress.

Dictionary Johnson’s favorite feline.

An unusual round church in London with a Templar past.

The lab where the scientist made his groundbreaking discoveries is preserved on the basement floor of the Faraday Museum.

An easily overlooked stretch of ornate window fronts and gaslight lamps that could be right from the pages of Dickens.

This London pub hides a peculiar secret: a recreation of the rooms shared at 221b Baker Street by Sherlock Holmes and Dr. Watson.

London's smallest police station is barely the size of a phone booth.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

Since 1874, this macabre collection has developed into a museum devoted to Scotland Yard's mementos of dastardly deeds.

A quiet memorial to those who died saving others in the heart of the City of London.

A medieval replica of King Arthur's legendary table, the Round Table hanging in Winchester Castle was decorated by Henry VIII.

A cluttered and astounding collection of antiquities and curiosities.

A cave on the Maryland border where civilians took refuge during the bloodiest battle of the Civil War.

Two geological phenomena in one precarious locale: a towering stone window, and a deep blue void.

The breadfruit-adorned final resting place of the infamous Captain of the HMS Bounty.

The John Snow Memorial marks the epicenter of London's 1854 cholera epidemic.