The Old Mill (El Molino Viejo)
An accredited arboretum with gardens around a historic adobe mill in San Marino. Gardens are open Tuesday to Sunday and closed Mondays.
Botanical garden · San Marino, CA
Library, art museum and 130 acres of gardens in San Marino, California. Open Wednesday to Monday; adult tickets $29 to $34 and reservations needed on weekends.
Reservations required Friday-Sunday, on holidays and during peak seasons.
1151 Oxford Road, San Marino, CA 91108
Check the date you plan to visit. No live opening status.
Visitor notice when checked: Desert Garden Conservatory, Ranch Garden, Mausoleum and Library exhibition halls are closed; the Conservatory reopens when temperatures allow. Check the garden’s current notices.
Checked September 28, 2026 · Official visitor source · Hours source
For a future visit, confirm the date, ticket availability and special-event exceptions with the garden.
Independent advertising.
Not a garden recommendation.
Accessibility details have not been recorded for this garden. Check the official visitor information for surfaces, slopes, step-free routes, facilities and equipment.
Official visitor information