This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The 28,000-year-old specimen is remarkably intact.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

This replica of a Sarajevo fountain stands at the heart of the world’s largest Bosnian diaspora community.

France's most famous cemetery, with some of its most curious tombs.

You can enjoy a (possibly haunted) stay at the medieval Norman castle that was once a favorite hunting lodge of King John.

An eerie natural formation that looks right back at you.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

These markers are used to document elevation changes around the famed dam.

A tiny slice shop hides down an unmarked hallway in a Las Vegas casino.

Formerly the world's largest, this Willy Wonka-esque contraption runs 24/7.

An overlooked monument to the celebrity gangster who helped put the sin in Sin City.

An exotic wildlife habitat right off The Strip.

At 130 years old and 126 feet tall, it is the largest known example of the rare Torrey pine tree.

Inky sludge oozes to the surface of this beach thanks to a rare natural tar seep.

Happy harbor seals frolic and snooze on this warm, sandy stretch of coast.

Thousands of migrating monarchs overwinter clustered amongst the eucalyptus trees.

The beautiful behemoth is one of the largest trees of its kind in the United States.

Guns that have been defending San Francisco since 1904.

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

Like a kitschy mirage in the Mojave, this eatery serves up classic 50s-style diner meals and a dinosaur sculpture garden.

A collection of anti-communist sculptures stands watch in the Mojave Desert.