The Maryhill Stonehenge was the first monument in the United States to honor the dead of World War I (specifically, soldiers from Klickitat County, Washington who had died in the still on-going war). The altar stone is placed to be aligned with sunrise on the Summer Solstice. Hill, a Quaker, informed that the original Stonehenge had been used as a sacrificial site, therefore constructed the replica as a reminder that humanity is still being sacrificed to the god of war. The monument was originally located in the center of Maryhill, which later burned down leaving only the Stonehenge replica. A second formal dedication of the monument took place upon its completion on May 30, 1929. Sam Hill, who died in 1931, lived long enough to see his Stonehenge completed.
The dedication plaque on this Washington Stonehenge is inscribed:
"In memory of the soldiers of Klickitat County who gave their lives in defense of their country. This monument is erected in the hope that others inspired by the example of their valor and their heroism may share in that love of liberty and burn with that fire of patriotism which death can alone quench."
In 1928, as a memorial to local combat soldiers that died in World War I, the American Legion Post 49 and the Boy Scouts planted 71 coast live oak trees along the 101 freeway between Summerland and Carpinteria.
The trees were aligned in two columns on either side of the narrow cement road. The one lane ribbon of concrete through the country turned into the four lane speedway of today, and a number of the oak trees now grow in the center median between opposing lanes of traffic. About 35 of the original 71 trees still stand today.
The two-acre War Memorial Park located on Fair Oaks Avenue provides a site for the two-story 12,000 square feet War Memorial building.
The War Memorial building was built in 1921 and is identified as a city cultural heritage landmark. The building was built on the former Oak Lawn Park with funding from city bonds and donations from the American Legion. The upper floor of the building includes a kitchen and a large multi-purpose room for dancing, meetings, banquets and other activities for groups up to 200 people. The lower consists of smaller rooms, storage and restroom facilities.
In 1921, Marshal Ferdinand Foch laid the cornerstone of the building. In 1923, General John J. Pershing planted a redwood tree on the grounds. The building is #2 on South Pasadena's Register of Cultural Heritage Landmarks. North of the building, grounds are dedicated for a landscaped memorial garden.