This walking tour focuses on the Presidio de San Diego, buried underground below the Serra Museum. Learn about the historical significance of this site going back to deep time, how the unique river and marine environment attracted people to the site since time immemorial.

This walking tour focuses on the Presidio de San Diego, buried underground below the Serra Museum. Learn about the historical significance of this site going back to deep time, how the unique river and marine environment attracted people to the site since time immemorial.