Join in for a Free-Guided-Shuttle-Tour and visit the Main Post, Western Coastal Bluffs, Crissy Field & many more historic areas of the park including wild open spaces. Free but RSVP is required: [email protected] or call at 415-561-2793 - Presidio with its historic buildings, beautiful grounds & iconic location invites you to enjoy its beauty and engage in its preservation to contribute its influence in shaping American History.