Thursday & Friday: 11:00AM, 12:30PM, 2:00PM. Saturday & Sunday: 10:30AM - 3:00PM, departing every half hour. Hidden beneath the city for nearly 150 years, Old Sacramento s underground has long been the capital s best-kept secret. Today, you can join thousands of residents and visitors in uncovering the facts behind the legends that lie below our buildings and sidewalks. Explore excavated foundations and enclosed pathways while your tour guide recounts the tales of devastation, perseverance, and determination that led to California s only successful street-raising project. These hour-long guided walking tours check in at the Sacramento History Museum before heading out into Old Sacramento and descending below historic buildings. Be prepared to walk in areas with uneven surfaces and low ceilings and get ready to learn and have fun all along the way During the summer months, please plan for very warm temperatures, as a portion of the tour is conducted outdoors and the underground spaces are not temperature controlled. Tickets may be purchased online, in person at the Sacramento History Museum, or over the phone by calling (916) 808-7059. These tours are often filled to capacity, so be sure to purchase tickets in advance to guarantee your spot. Children (5 & Under): Free but not recommended. The tour content is best understood by children over age 6.