The visitor Center at Moffett Field is a self-guided walkthrough and an average stay at the NASA Ames Visitor Center is about one hour. Please plan accordingly.
Location: Located at the main gate to NASA's Ames Research Center at Moffett Field, California. 15 minutes northwest of San Jose, California, just off U.S. 101 at the "Moffett Blvd / NASA Parkway" exit.
Parking: Parking is located in the back of the Visitor Center tent. Please drive your car around the tent to find open parking spaces.
Source: NASA Website