San Jose is the Bay Area’s largest city by population and the urban core of Silicon Valley, which shapes what there is to do: tech museums, a rebuilt downtown with a real arts and theater scene, and county parks in the foothills within a short drive. The useful split is downtown (museums, cathedral, galleries, California Theatre) versus the outer parks (Almaden Quicksilver, Lexington Reservoir).
Downtown San Jose
- Santana Row. The open-air shopping, dining, and nightlife district on the west side, with designer shops, restaurants, a cinema, and a people-watching scene. Parking fills at peak; the adjacent Valley Fair mall is the overflow lot.
- Cathedral Basilica of St. Joseph. The 1885 cathedral (the fifth church on the site) in downtown, with domes and stained glass. Interior tours run Wednesday-Friday, 1-3 pm; entry is free, with a suggested $2 donation for tours.
- Institute of Contemporary Art (ICA). Free admission, rotating shows of local and contemporary work, including video and light installations.
- California Theatre. The restored 1927 downtown theater hosting opera, ballet, and touring shows; check the schedule.
The Tech Interactive
The downtown science museum (the “Tech”) is the family anchor, with hands-on exhibits on robotics, design challenges, and Silicon Valley history. It is aimed at kids and teens but covers real technology; budget a half-day if you go with children.
Parks and outdoors
- Almaden Quicksilver County Park. South of the city, 40+ miles of trails on the site of the old New Almaden mercury mine (once the largest in the Americas). Mining ruins along the trails; horseback riding available via local stables. A morning is enough for the main loop.
- Lexington Reservoir County Park. A 950-acre lake west of town with picnic areas and fishing; swimming is not allowed. Testarossa Winery is a short drive away for a tasting.
Planning tips
- Downtown is compact. The cathedral, ICA, and California Theatre are walkable; Santana Row needs a car or rideshare.
- Check hours. The cathedral tours are only Wed-Fri; the California Theatre is event-based.
- Traffic. The 280/87/101 interchanges are congested at commute times; the parks are easier early.
Final Thoughts
San Jose works as a one or two-day stop built around downtown (cathedral, ICA, California Theatre, the Tech) plus one foothill park, with Santana Row as the evening option. Confirm the cathedral tour days and the theater schedule before you go, take a car for Santana Row and the parks, and treat Almaden Quicksilver as a half-day mining-history hike. It is a city to use as a base for the South Bay and Silicon Valley, not a destination you center a whole trip on.
