■ Festival on Ponce. 10 a.m. to 5 p.m. Saturday; 11 a.m. to 5 p.m. Sunday. Free. Olmsted Linear Park, 1788 Ponce de Leon Ave. Presented by The Atlanta Foundation for Public Spaces, the festival will include 125 displays of fine arts and crafts, folk and “outsider art”; a children’s area; live music and food trucks. The park was designed by Fredrick Olmsted Sr. FestivalOnPonce.com.
■ Rock Chastain benefit concert with Three Dog Night and Atlanta’s The Whiskey Gentry. 7 p.m. Oct. 21. $40 to $75. Chastain Park Amphitheatre, 4469 Stella Drive NW. All proceeds will support the mission of the Chastain Park Conservancy to keep Chastain Park clean, safe and green and to work on the implementation of the Chastain Park Master Plan. rosa@ChastainParkConservancy. org, ChastainPark.org/happening/rock-chastain-2017.