This small city where almost everyone lives in the same building can only be reached via North America's longest tunnel.

Colorful boxes placed over the dead are left to rot and crumble.

A trading post in the North Pole where children send letters.

The ghostly remains of what was once the world's richest copper mine.

Upside-down trees serve as natural flower pots in this hanging garden of Alaska.

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

Breathtakingly blue walls shimmer inside the "Glacier Behind the Town."

Designed by Maya Lin, the memorial honors 41 individuals who died fighting for equal rights between 1954 and 1968.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

You'll need cowboy boots to trek to this old-fashioned saloon nestled in a giant natural cave.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

148 feet long and in the middle of a verdant forest.