A garden oasis filled with flowers mentioned in the works of William Shakespeare.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

The restored and active Victorian-era final resting place of San Francisco.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

A hidden beach at the end of a tunnel of mangrove trees.

This 1920s railway depot is now home to two unique museums complete with a miniature train ride.

Home to the organ played at General MacArthur's funeral.

Former utopian colony based on the belief that the universe exists in a hollow sphere.

This labyrinthine resting place of Black American leaders has been reclaimed by nature.

The site where Poe "in great distress, and ... in need of immediate assistance" likely died.

Eighteen miniature death-scene dioramas.

The trials and tribulations of marking Poe's grave.

A burnt-out motel with priceless Native American artwork in the basement, redeveloped into apartments.

The home of famed war correspondent Ernie Pyle is now a library and museum dedicated to his memory.

The only Native American comic shop in the world.

The most powerful laboratory radiation source in the world pulses with 1,000 times the electricity of a lightning bolt.

This opulent Pueblo Deco movie palace melds Art Deco and Native American motifs.

The remnants of a wooden-hulled fleet built and abandoned in WWI, now home to a thriving ecosystem.

Proto-CIA agents trained with grenades in the sand traps and fired machine guns from the fairways.

Every drop of D.C. tap water flows through this old waterworks.

The only Civil War battle in Washington D.C. took place near this highest natural point in the city.