Pacific Ygnacio Plaza is a Class A office building located in downtown Walnut Creek, in the Bay Area of California. The building is close to a BART mass transit station, which connects Walnut Creek to San Francisco and surrounding suburbs. Interstate Freeway 680 provides ready access to Silicon Valley. The building is four storeys high with three floors of underground parking. It was constructed in 1988 and features an impressive glass and polished granite exterior.