Rumored to be the famed pirate's lookout tower, this historic stone structure is now just watching for tourists.

Come for the springs; stay for the mud bath.

The larger of two volcanic peaks rising out of the crystalline waters of the Caribbean.

The outside of this exposed Moche pyramid is covered with striking colorful adobe friezes.

From Nunavut to Tierra del Fuego, you won't find any lighthouse higher than this one.

These cliff-dwellings might be Mexico's least visited archaeological site.

A graceful natural rock formation stands astride the point where the Gulf of California meets the Pacific Ocean.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

This Native American settlement dates back to the Pueblo II period.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

The first Protestant church in Arizona and only Gothic Revival style adobe church in the world.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

During World War II this was the site of an "honor camp" used as a prison for draft dodgers, Native American conscientious objectors, and Japanese-Americans—including a man who brought his case against the camp to the Supreme Court.

Visitors to this public park will also find the ruins of an old western fort.

This iconic 1958 tower welcomes air travelers to Tucson with neon-lit letters and architectural style.

After a short-lived attempt to bring America in line with the rest of the world, this road was left in metric.

Spectacular views await visitors to this lake.

The only road through the heart of Glacier National Park.

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

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

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

Beautiful scenery, history, science, and physics come together in this remnant of shipping lore.