Sutro Tower may be the most beloved landmark among San Francisco residents, and after this best-of episode from 2021, we'll all have a PhD in the Sutro's history and present. Sutro spokesman Dave Hyams joins co-hosts Peter Hartlaub and Heather Knight to talk about what exactly Sutro does in 2021, the constant maintenance and some wild trivia. Did you know that there's so much concrete underneath Sutro Tower that the center of gravity is below ground? And no mayor has ever been to the top. (Be the first London Breed!) Also in this episode, we give a Total SF Book Club update, and replay Daniel Handler's very funny S.F.-centric accordion version of "Should I Stay or Should I Go" Produced by Peter Hartlaub. Music is "The Tide Will Rise" by the Sunset Shipwrecks off their album "Community" and cable car bell-ringing by 8-time champion Byron Cobb. Follow Total SF adventures at www.sfchronicle.com/totalsf Learn more about your ad choices. Visit megaphone.fm/adchoices