The frozen bubbles that form on the icy surface of this Canadian lake contain enough methane to create a small explosion.

A surviving remnant of the thick ice mass that once mantled most of Western Canada's mountains.

With a floor made of thick glass, this observation deck offers a full view of Sunwapta Valley's mountains and rivers.

When North America was covered in ice, this was an oasis in the frozen desert.

A historic area for shopping and dining in Ketchikan's former red-light district.

As you overlook the Howe Sound and the town of Squamish, your breath will be taken away by its beauty or the stairs... probably all the stairs.

This expansive bridge in the Canadian wilderness was originally just built for friends.

Cascading outward, this waterfall creates the appearance of a flowing veil.

Historic site that showcases the history of British Columbia's fishing industry.

Honoring the adaptive athlete's Marathon of Hope.

This coastal port saw one of the most significant battles of the Civil War.

The drama of nature in full effect in this Nevada State Park.

Settled by the Church of Jesus Christ of Latter-day Saints in 1859, this abandoned frontier town has appeared in several films.

A tunnel with windows, so you don't miss out on the impressive views.

The unusual patterns in this rock formation result from two distinct modes of weathering.

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

This isolated outpost was once the only place to cross the Colorado River for hundreds of miles.

When it was built in 1929, this historic bridge was the only place to cross the Colorado River for 600 miles.

Archaeologists believe this panel of petroglyphs depicting descending sheep and other figures in Glen Canyon are 3,000 to 6,000 years old.

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

These mid-century motels once housed the workers who built the Glen Canyon Dam.

The location where the iconic movie character declared it was time to go home.

This balancing rock is one of Utah's most unusual geological formations.