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donated by


YSI Science and Nature Centers

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YSI Administrative Office
is located in Vasona Park.
See Vasona below for Physical Site address for driving.

(Mailing address for YSI Administrative Office)
296 Garden Hill Drive
Los Gatos, CA 95032



Please contact the Vasona facility for any administrative matters, questions, or concerns.

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Alum Rock

16260 Penitencia Road
San Jose, CA 95127



Open All Year
Tuesday - Friday
12:00 noon - 4:00 PM
Saturday - Sunday*
12:00 noon - 4:30 PM

*Open 12:00 - 4:30 PM on each Sunday from Easter through Labor Day and on the City of San Jose observed holidays of Memorial Day, Independence Day, and Labor Day.

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Alum Rock Facility


(Physical Site address for driving)
333 Blossom Hill Road
Los Gatos, California



Open All Year
Monday – Friday
9:00 AM – 4:30 PM

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Facility Photo


16055 Sanborn Road
Saratoga, CA 95070



For open times, please contact
Santa Clara County Parks.

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Sanborn Facility

Last Update:
February 5, 2015

Copyright © 1953 - 2015, Youth Science Institute
All logos, graphics, and photographs herein are used with permission,
remain the property of their respective owners, and are protected by US Copyright laws