Earth's tallest volcano is sacred to Native Hawaiians, and home to a dozen world-class observatories.

Despite a legend that says this highest peak in Oregon was climbed in high heels scores of people have died on its slopes.

The highest point in Washington state is a volcano covered in glaciers.

The only house built with a turret, crenellations, and a moat in Palmer, Alaska.

This whimsical stacked cabin looks like something out of a children's book.

Four-story concrete hotel never opened to customers.

The king of U.S. high points towers over every other peak on the continent.

Research missiles and rainbow auroras at the world's largest land-based rocket range.

The northernmost truck stop in the United States.

The stickered marker pinpoints where the only maintained road in the United States crosses into the polar region.

During the summer, surfers in Alaska take advantage of this inlet’s unusual water patterns.

Buy your friend a drink or staple some cash to the wall for the next guy at the Salty Dawg Saloon.