William R. Mason Regional Park was the fourth park to open under the county master plan of regional parks. The park encompasses 345 acres of open spaces, grassy knolls, a 9 acre lake and natural areas. Generous plantings of trees offer shade and beauty throughout the park.
Mason Regional Park 18712 University Drive
Irvine, CA 92612-2601
(949)923-2220
or (949)923-2223