Round Valley Ensphere: Eagar, Ariz.

Photo courtesy of SPS+ Architects, LLP
Situated at an elevation higher than 7,000 feet in eastern Arizona and completed in 1991, this was the first domed high school football stadium in the country. The facility, which cost $11 million, has 189,000 square feet.
Near the New Mexico border, the Ensphere is home to
Round Valley (Eagar, Ariz.) and can host a football game, tennis match and either a basketball or volleyball game at the same time. It is home for six different sports overall.
The Ensphere can get very loud, which is intimidating to opponents, but on the other side of the coin Round Valley players have to make somewhat of an adjustment when they play on outdoor fields.
President George W. Bush visited the Ensphere in 2002, but it was in reference to destructive wildfires in the area.