We’re excited to share a new park-wide self-guided experience in the Presidio called “Field Notes.” Field Notes are a constellation of small, wooden-hinged blocks affixed to fence posts, benches and stumps along park trails that contain hidden messages that invite park visitors of all ages to explore and make discoveries about the Presidio’s natural world.

There are at least 10 Field Notes each season, each containing a unique observational prompt – for instance, a visitor can look for a locally rare butterfly in the spring, discover a remnant of a historic rose garden in the summer, or smell fragrant California sage in the winter. A visitor can access this page and the Field Notes map through a QR Code inside the blocks. See the below list of Field Notes, their coordinating location on the map to the right, and learn more about how QR codes work.​