Grace Cathedral in San Francisco was declared "a house of prayer for all people" when its first cornerstone was laid down in 1910, and the worship center has carried that pledge for more than a century. Total SF hosts Peter Hartlaub and Heather Knight get a tour of the California Street landmark, then sit down with Very Rev. Malcolm Clemens Young, the dean of Grace Cathedral. Young talks about the cathedral's history — including a visit from Martin Luther King Jr. after the Selma march — and its role in the 21st Century as a place for all to enter. They also talk about Carnivale, the cathedral's gala coming up on March 1. Total SF Book Club meets at 6 p.m. Thursday Feb. 24 in the Koret Auditorium at the San Francisco Public Library's main branch. Register for the live event or virtual at www.sfpl.org 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