The Walnut Creek Historical Society offers a free 90-minute guided tour of the downtown area the second Saturday of the month through October. This easy walk on city sidewalks brings to life the early times of downtown Walnut Creek. The next tours will be on March 12, April 9 and May 14. The tours depart at 9:30 a.m. from the fountain at Liberty Bell Plaza, corner of Broadway and Mt. Diablo Blvd. Advanced registration is not required. For more details, call 925-935-7871 or visit www.wchistory.com