Its unique collection details the history of the state's svelte railroads.

Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

A unique arch graces the Dolores River Canyon near the Hanging Flume.

This towering volcanic plug stands out among the dramatic formations that dot this otherworldly desert valley.