How an old oak grove became OC’s most enduring park

For more than 160 years, people have visited what is now Irvine Regional Park. In the 1850s, locals referred to an old oak grove on the historic Irvine Ranch as “the Picnic Grounds.” It became so popular that in 1897 the Irvine Company donated the grove and 160 acres to create Orange County’s first park, “Orange County Park.” The county eventually renamed it “Irvine Regional Park” in honor of its roots in the old Irvine Ranch.


  • New hiking trails

    Civic leaders and outdoor enthusiasts celebrate the opening of Red Rock Wilderness area, now available for you to enjoy.

  • 10,000 STEPS

    Start your day with a relaxing hike at Bommer Canyon.

  • The view is good from the top

    Irvine’s park system has been named No. 1 in California and No. 4 in the United States by the Trust …

  • 10,000 steps at Mason Regional Park 

    A 9-acre lake, popular among model sailboaters, is just one of many attractions at the 339-acre William R. Mason Regional Park. …