The Palo Alto Visitors Center is co-located with the Palo Alto Chamber of Commerce at 122 Hamilton Ave. in downtown Palo Alto. The Visitors Center is staffed Monday through Saturday from 9 a.m. until 5 p.m. and may be reached at 650-327-2344. The center has useful brochures and other materials and can assist with answering questions and addressing special or unusual needs of visitors.