One of the "twins" in these falls on the Snake River was sacrificed for hydropower generation in the 1930s.

Three generations of intrepid collectors display their curious artifacts in a homemade museum right next to the caves they discovered.

This underground cave located in the most barren reaches of Idaho is filled with ice year-round.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

A busy trail network outside Ketchum, Idaho, hides a small piece of early Forest Service history.

Tucked away on a scenic trail, a modest memorial honors one of the greatest writers of our time.

Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

The world's last remaining store of its kind.

A Lovecraftian altar of nightmarish bronze chairs sits ominously on a boardwalk in Puerto Vallarta.

A lovers' beach, tucked below the surface of the island, provides a safe haven for romance.

This popular cave pool is truly magical, despite the crowds.

Clap your hands at the base of the pyramid, and the song of a sacred Mayan bird will echo through the air.

Every equinox this Maya pyramid puts on a spooky ancient light show.

This legendary urban waterfall creates a dazzling display of rainbows.

More than 2,000 species of tropical plants call this nature preserve and sanctuary home.

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

One of Hawaiʻi’s most notable historic petroglyph fields lies within a major resort.

The southernmost point in the United States is a beautiful place to look at but a deadly place to wade in.

This Japanese national treasure was originally built in 593.

This glass wall is gradually filling up with paper cranes, in honor of Hiroshima’s past and dedication to its future.

A plaque marks the site directly below the mid-air detonation of the atomic bomb over Hiroshima.

An eerie reminder to the horrors of World War II.

Peace Park and the Atomic Bomb Dome.

"Excuse me sir, your submarine is blocking my building."