Yes, The Elizabeth F. Gamble Garden in Old Palo Alto is free and open to the public every day during daylight hours.
The historic house and 2.5-acre garden, located on Waverley Street and Churchill Avenue were owned by Elizabeth Gamble, granddaughter of the co-founder of Procter & Gamble. On her death in 1981, aged ninety two, the property was bequeathed to the City of Palo Alto, and since 1985 has been operated by a non-profit organization as a public garden and community resource.