Known as the "hidden secret of Decatur County," Go-Astronomy says that Nine Eagle State Park is the only dark sky park in Iowa with a Class Two rating on the Bortle Scale. The 1,100-acre park includes ...

This Scottish gem offers miles of "golden sands and picturesque dunes", perfect for night sky observation ... list with a Bortle Scale rating of 2, indicating exceptional dark sky conditions.

Places that have a Bortle dark-sky scale score are provided. The nine-tier system ranks a three as a rural night sky and a one as an excellent dark sky. Bienville National Forest: Bortle score - 3.