You can see three Irish counties from this Neolithic hillside fort, once the seat of the Kingdom of Ailech.

This 30-foot pile of rocks may be the grave of a mythological Irish queen.

Achill's most recently abandoned village dates back to to the Age of Enlightenment.

A stunning Victorian abbey and walled garden on a lakefront.

Amidst the bustling streets of Dublin, there is a hushed garden that is dedicated to "All those who gave their lives in the cause of Irish Freedom."

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

A Wild West jailhouse that slid down the mountainside.

See massive fossils that are over 200 million years old in northeastern Arizona.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A sharp bend in a dramatic river canyon cut through red rocks.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

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

One of the world's tallest Ferris wheels takes visitors high above Las Vegas in a spinning party room.

Back in 1952, you could get a mushroom cloud chaser with your atomic cocktail.

Temporary Burning Man sculpture made of two 18-wheelers.

Las Vegas's very own 40-foot-tall fire-spewing praying mantis.

The second-largest gold nugget in existence, displayed in a Las Vegas casino conveniently named the Golden Nugget.

The bullet-riddled wall from the St. Valentine's Day Massacre, bloodstains enhanced for your viewing pleasure.

Flashy signs from Las Vegas’s past find their final resting place at this unusual graveyard.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

Dyed by iron oxide over centuries, these sandstone rocks rise thousands of feet into the sky.

The abandoned train depot now doubles as a well-placed rest stop for those who take the road less traveled.

Resting place of Hollywood's immortals is also site of summer film screenings.

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