At 238 feet above the bottom of a gorge this span is known as the biggest thrill on the road to McCarthy.

A tiny wilderness cemetery commemorates the deadliest episode of the Klondike Gold Rush.

A high school astronomy enthusiast designed this model of our solar system to be traversed on foot.

A rare kind of blue bear can be found chiefly in the national park that shares their name.

The "Gateway to the Arctic" connects Barrow's indigenous population with the sea and its traditional industry: whaling.

Don't be a grizzly man. Get personal with Alaska's wild bears from the safety of this conservationist camp.

Internationally recognized group that works to protect the wolf and educate the public about its plight.

An Alaska livestock farm devotes itself to harvesting wool from creatures that once ran with mammoths and sabertooth tigers.

Low tide reveals 8,000-year-old rock carvings in Southern Alaska.

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

North America's first frozen mummified remains of an ice age steppe bison, the 36,000 year-old mummy named "Blue Babe."

This frozen tunnel in central Alaska is both an engineering feat and a valuable climate classroom.

The ghostly remains of what was once the world's richest copper mine.

This WWII-era military installation once held an entire city within its walls - now, its walls are falling down.

Gorgeous cave resemble a winter wonderland.

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

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

Australian Lake set aglow by Noctiluca Scintillans.

The largest collection of medicinal plants in Australia is also home to a witch who will show you how to use them.

"The Wonder From Down Under," a worm shaped museum celebrating the endangered Giant Gippsland earthworm.

An obsolete form of timekeeping still marks the hour in this adapted 19th century lighthouse.

The largest shot tower in Australia is a unique reminder of industrial ammunitions history.

A remarkable lifelong collection of antiques and art preserved in a historic Melbourne townhouse.

Australia's largest medical museum featuring a 19th-century pharmacy.