When ecosystems collide in the arid Southwest.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

A Norwegian-born sculptor created these soaring guardian angels at the entrance to Hoover Dam.

What was once a presidential estate is now an exotic menagerie and home to the Budweiser Clydesdales.

The site of the climactic scene from the classic horror film is now a historic landmark.

The Kirkland Monument remembers a selfless Civil War hero who braved the battlefield to give water to his dying enemies.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

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

The only road through the heart of Glacier National Park.

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

Only known mainland rookery of the threatened Stellar sea lion.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

Housing the famous Norwegian ice-defying 19th century polar exploration ship.

One man's exploration of the human form, including the bizarre and delightful "Man Attacked by Babies."

Home to three historic ships from the age of Vikings.

The famous boat that once ferried Bogart and Hepburn still floats in Key Largo after being abandoned for years.

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

This rugged area of red rocks and arches is often considered one of the most beautiful places on Earth.

This steep cable railway has been hoisting passengers in the heart of Québec City for over a century.

This lovely, if imposing, piece of Canadian gothic is possibly the most photographed hotel in the world.

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

Four hundred granite steps were built into this massive rock by the National Park Service.

This abandoned boat was left in place thanks to its rotting beauty.