National Register Listing

Initial Point of the Gila and Salt River Base Line and Meridian

Summit of Monument Hill at 115th Ave. and Baseline Rd., Avondale, AZ
Local significance of the site:
Exploration/settlement

Listed in National Register of Historic Places in 2002.

The National Register of Historic Places is the official list of the Nation’s historic places worthy of preservation. Authorized by the National Historic Preservation Act of 1966, the National Park Service’s National Register of Historic Places is part of a national program to coordinate and support public and private efforts to identify, evaluate, and protect America’s historic and archeological resources.