Take a short walk and hear stories of the Presidio while under the flags of Spain, Mexico, and the United States.

Meet Ranger Jose Roldan at the Presidio Transit Center, corner of Graham Street and Lincoln Boulevard.

For reservations, phone (415) 561-4323.

Generally accessible; some visitors with disabilities may need assistance.

This event is part of a full day of fun activities on Oct. 27, across the parks, related to the 40th birthday of the Golden Gate National Recreation Area, including a family-friendly community celebration in the Marin Headlands. For details on these events, and more ways to celebrate, visit Golden Gate at 40.