An abandoned relic of the city's failed experiment with below ground transit.

Beside a busy highway, a colony of Great Blue Herons raises hundreds of offspring each year.

The site of murders and Satanic cult gatherings.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

If you want to build a better mousetrap, first consult this small museum's massive collection of trapping tools.

The grand marble structure next to the White House is Andrew Carnegie's temple to Pan-American diplomacy.

A portal into the bricked up canal that runs through the heart of Washington D.C.

Obscure Freemasons still live in D.C.’s largest private residence.

A giant mascot, a car bomb, and the mafia mingle in the history of a defunct restaurant chain.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

More than a century old, this trading post resides in the Navajo Nation.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

What is the Thing?

A real-life homage to the Rachel McAdams and Will Ferrell's fictional Eurovision musical duo.

The first woman to become a member of the parliament of Iceland.

Beloved bar home to musicians of all eras and reputations.

A number of gruesome unsolved murders have turned this simple home into a morbid tourist trap.

The famous author's cottage hideaway.

"We Seceded Where Others Failed."

For 32 years the famous Ringling Bros circus troupe spent winters in this sunny spot in Florida.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

An oddities shop that dabbles in the deathly and beautiful.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.