Arches is one of the Mighty Five, a collection of outstanding national parks in southern Utah. The other four are Bryce Canyon, Canyonlands, Capital Reef and Zion. It is easy to understand how the park was named. There are over 2,000 sandstone arches within these 76,679 acres of red-rock country. You will also admire abundant mesas, needles, monoliths and natural bridges. This geological masterpiece has been a work in progress for over 300 million years. To preserve this visual sensation for future generations, Arches was made a national monument in 1929 and a national park in 1971.