A Buddhist shrine in a cave protected by macaques next to dark passages lined with creepy paintings.

A phallic shrine to a princess goddess in Krabi, Thailand.

For centuries young Thai men used this Giant Swing as a slingshot to heaven.

At the right time of day, sunlight floods through the roof of this cave and illuminates the small pavilion hidden within.

A limestone wonderland of water and subterranean secrets.

This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

A rare chance to get up close and personal with a 13-mile ribbon of ice near downtown Juneau.

The king of U.S. high points towers over every other peak on the continent.

Mind-blowing carvings and fantasy ice scenes grace the largest year-round ice environment in the world.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

An abandoned aircraft sits submerged in a lake in the Alaska wilderness.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.

Gorgeous cave resemble a winter wonderland.