<p>We will be visiting San Francisco next week. Unfortunately we did not think ahead and did not plan a tour at Cal and now they are all sold out. Do you know if they allow walk-ins? They might have some cancellations, I think. </p>
<p>You can always show up hoping for a last minute cancellation or no show.</p>
<p>If you can’t get on a guided tour, there are self guided tour resources on the website:</p>
<p><a href=“Self-Guided Tours | Visitor Services”>Self-Guided Tours | Visitor Services;
<p>Definitely stop by the visitors office and see if they can fit you in. There are often cancellations.</p>