The first declared National Monument in the United States.

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

This Colorado hiking trail provides a small gold mine of abandoned gold mines.

This rare vessel mixed luxury with labor before being converted to a museum and sometimes haunted maze.

This seemingly charming home memorializes and honors the victims of a century-old unsolved murder.

A miniature baseball stadium honoring Johnny Rosenblatt Stadium, home of the College World Series from 1950-2010.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

On the edge of grassland in northeastern Colorado, these rock formations are some of the few remnants of a high plain that has eroded away over millions of years.

This erect, phallic geological spire wasn't always named so domestically.

Known as "The Hill of the Little Devils."