Twelve plaster figures inspired by da Vinci's famed painting haunt the desert landscape above a real-life ghost town.

Thousands of artifacts relating to human sexuality, including the world's largest sex bike.

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

This vintage train once gave new meaning to “swimming upstream.”

Experience what life was like in Ireland during the Viking and medieval ages.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

This statue celebrating everyday life in Dublin has a few unsavory nicknames.

A museum that cashes in on its infamous little people while teaching you a thing or two about the Irish fey.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

This legendary urban waterfall creates a dazzling display of rainbows.

These picturesque Hawaiian falls are home to a rare species of fish that uses a special sucker to climb up cliffs.

This black shoreline is made up of exploded lava particles.

Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

These ancient sacred grounds granted amnesty to those who managed to reach them.

A controversial memorial at the place where Captain Cook met his violent end.

Home to the deepest rift anywhere on Earth.

This town is home to the world’s largest arch constructed entirely of elk antlers.

Home to a timed geyser created by complete accident.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One of nature's most well-scheduled phenomenons resides in Wyoming's Yellowstone National Park.

A beautiful geyser under environmental threat.

This Yellowstone geyser may not shoot as high as the nearby Old Faithful, but it erupts for considerably longer.

A devilishly named gorge that was a sign of salvation for many pioneers.

A popular rock that acted as a waymarker for American pioneers.