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

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

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

At the time of its completion, it was the tallest dam in the world.

No Gordon Lightfoot song, only a barebones monument to greed.

The only natural lake in the world that drains into both the Atlantic and Pacific Oceans.

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.

A beautiful geyser under environmental threat.

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

The residents at this Yellowstone wildlife park will certify your cooler as "bear-proof."

This rustic old building is said to be the most photographed barn in America.

A colossal concrete penguin announces this Montana town as the coldest spot in America. But is it really?

Crystal clear, drinkable mountain spring water by the side of the road.

A majestic hotel that also stands as a historic relic.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.

Spectacular views await visitors to this lake.

The only road through the heart of Glacier National Park.