Simi Valley in Ventura County, California — The American West (Pacific Coastal)

Heritage Oak

Quercus Agrifolia

Photographed by Craig Baker, April 24, 2019

1. Heritage Oak Marker

Inscription. The Heritage Oak that stood on this site for more than 400 years was witness to the 4 historical periods of Simi Valley. From the Chumash Indians, to the largest land grant ever made to the Pico family in the Spanish period, through the pioneer period when easterners looked for farm land, to the modern period of local industrial development.

Erected by Ventura County. (Marker Number 134.)

Topics and series. This historical marker is listed in this topic list: Landmarks. In addition, it is included in the Historic Trees, and the Ventura County Historical Landmarks series lists.

Location. 34° 15.928′ N, 118° 43.144′ W. Marker is in Simi Valley, California, in Ventura County. It is on Heritage Oak Court 0.1 miles west of Tapo Canyon Road, in the median. Touch for map. Marker is in this post office area: Simi Valley CA 93063, United States of America. Touch for directions.

Regionally, this marker is in Greater Los Angeles,

on Central Coast,

and in the Transverse Ranges.

It is also on the American Pacific Coast.

Globally, it is in North America,

on the Ring of

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Fire,

in the Pacific Rim,

in the Western Hemisphere,

in the Western World,

and in the Anglosphere.

Historically, it finds itself in what was once New Spain

and also Mexico’s Alta California.

Other nearby markers. At least 8 other markers are within 4 miles of this marker, measured as the crow flies: Simi Elementary School (approx. 1.2 miles away); Grandma Prisbrey's Bottle Village (approx. 1.3 miles away); In Memory of Those Who Perished (approx. 1.4 miles away); Rocketdyne Santa Susana Field Laboratory (approx. 3.3 miles away); Rocketdyne Recreation Center (approx. 3.3 miles away); Santa Susana Railroad Depot (approx. 3.3 miles away); Velocipede Hand Car (approx. 3.3 miles away); Railroad Motor Car (approx. 3.3 miles away). Touch for a list and map of all markers in Simi Valley.

Regarding Heritage Oak. The tree was cut down in 2007 because it had died. A section of the tree is on display below the marker.

Ventura County Historical Landmark Statement of Significance:
No. 134, Coast Live Oak Tree. Age unknown. Designated August 1990.
The oldest and largest oak tree standing in Simi Valley (Quercus Agrifolia), it has

Photographed by Craig Baker, April 24, 2019

2. Heritage Oak Marker

a canopy of over 100 feet, and trunk measuring 9 feet across. It cannot be cored accurately to determine its age because it has a large cavity.

Additional keywords. House of the Book, Brandeis-Bardin, Eisenshtat, 53

Photographed by Craig Baker, April 24, 2019

3. Heritage Oak Marker

House of the Book image. Click for full size.

Photographed by Craig Baker, April 24, 2019

4. House of the Book

Located in the Brandeis-Bardin campus - Private. Designed in 1973 by Sidney Eisenshtat. Ventura County Historical Landmark No. 53.

Credits. This page was last revised on September 2, 2025. It was originally submitted on April 25, 2019, by Craig Baker of Sylmar, California. This page has been viewed 850 times since then and 59 times this year. Photos: 1, 2, 3, 4. submitted on April 25, 2019, by Craig Baker of Sylmar, California. • Andrew Ruppenstein was the editor who published this page.