Only known mainland rookery of the threatened Stellar sea lion.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

A 6-mile-long lake created by an apocalyptic seismic event and the deadly chain reaction that ensued.

The only road through the heart of Glacier National Park.

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

An architect's childhood fantasy treehouse made real.

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

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

A beautiful geyser under environmental threat.

What happens when a sculptor has to find a way around a 100-year-old copyright.

Outsider art meets hard scrabble mountain life in this woodcarver's home/art piece.

Few other hotels can rival the grandeur of the Castle in the Rockies.

Fossils, railroads, and waterfalls!

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

Every fall this lake mysteriously drains, like a bathtub with the plug pulled out.

This massive mall has hundreds of shops, an amusement park, and a history of deadly amusement attractions.

As if T-rex wasn't big enough, this Canadian monument is four times larger than the real thing.

This massive and unusual rock formation near Okotoks is the world's largest known glacial erratic.

Live long and prosper in Vulcan, Alberta.

Nestled near the mountains of western Canada resides this behemoth earth mover.

Historic site where Native American hunters once trapped and killed buffalo.

A sleepy little town that had the greatest landslide in North American history fall on it.

Blackfoot petroglyphs of southern Alberta which date back as far as 7000 B.C.

One of the Seven Wonders of the Modern World holds the world's tallest metal staircase.