Ever wonder what lies beneath the streets of historic Old Sacramento? Your opportunity to find out returns this weekend with the kickoff of the Old Sacramento Underground tours. Tours will depart every 30 minutes from 10:30 a.m. to 3 p.m. on Saturdays and Sundays through May, when the tours expand to include Thursdays and Fridays. The guided tours last about an hour and cost $15 for adults, $10 for children ages 6 to 17 and free for children ages 5 and younger. For more information, log onto historicoldsac.org.