PLEASANTON -- The fifth anniversary of Alviso Adobe Community Park will be celebrated Saturday with historical presentations, musical performances and a documentary screening.

The free community party is scheduled from 10 a.m. to 3 p.m., said Daniel Villasenor, a Pleasanton recreation supervisor.

"It will have a lot of family fun and events where kids can participate in past cultural activities," he said. The gathering also will commemorate important Bay Area historical periods that took place on the seven acres of land at 3465 Old Foothill Road. In 2008, the site was converted into a $4.5 million park to be used as an interpretive facility where students and visitors can learn about the history of Pleasanton and the Amador Valley.

Likewise, the anniversary festivities will feature historical presentations at the park's small amphitheater, Villasenor said. Four generations of Ohlone Indian women, for example will share what life was like there when it was inhabited by American Indians. "They will be doing displays on how to make jewelry, brushes and cider, as well as how to carve soap," he said. "They'll also show how food was made then, such as how to grind acorns."

In the mid-19th century, the site was part of a 12,000-acre estate called Rancho Santa Rita. It was owned by landowner Francisco Alviso, who built an adobe house there in the 1850s. It is one of just a handful of adobe structures still standing in the Bay Area, and it has become the park's centerpiece, Villasenor said.

"It was one of the first buildings in the Tri-Valley area," he said.

Los Arribenos, a band specializing in music and dance from the Californio era, when Alviso lived, will perform at the party Saturday.

Also, a presentation will be delivered by Bruce and Bobbie Takens, owners of Meadowlark Dairy, which operated there for years before the City of Pleasanton bought the land. The dairy is still in operation and has a drive-through service in downtown Pleasanton. Entertainment will be provided at the anniversary celebration by a youth comedy improv troupe called "Creatures of Impulse." A student documentary depicting the park's history and its current programs will be screened, Villasenor said.

"It's a great park with a rich history," he said.

In addition, Western Gardens, a Pleasanton nursery, will give a presentation on winter gardening. Parking is limited at the site, and overflow spaces will be available at nearby Foothill High School. Those parking at the school can take a free shuttle to and from the event. Free food and drink will be provided.

Contact Chris De Benedetti at 510-353-7011. Follow him at Twitter.com/cdebenedetti.

If you go
What: Fifth Anniversary Celebration of Alviso Adobe Park
When: 10 a.m. to 3 p.m. Saturday
Where: 3465 Old Foothill Road in Pleasanton