The Plaza was established when San Jose moved from its original location on the bank of the Guadalupe River to the current downtown location in 1797 and has been in use ever since, making it the oldest public open space in California.[citation needed]
The present-day park was the site of California's capitol from 1849 to 1851, a period during which the California Republic gained American statehood; hence, the site contained California's first state capitol. From 1889 to 1958, San Jose's city hall occupied the center of the park before the local government moved it northward to North First and Mission Streets.[2] Today, San José City Hall is located nearby on Santa Clara Street.
The Music in the Park concert series has been held in the park since 1988, except during the 2020 pandemic and in 2011 and 2012, when security issues forced the organizer of the formerly free series to take a break and return as a ticketed event.[3][4]