Sebastian County Ben Geren Park Location 7200 Zero Street Fort Smith, AR 72903 Park & Office Hours Park opens at sunrise (6:30 a.m.) and closes at 11:00 p.m. in the summer and at 7:30 p.m. in the winter The office is open Monday through Friday 8:00 a.m. to 5:00 p.m. Contact Info. Administration Office Phone: 479-646-2444 Fax: 479-646-7779 Email Park Secretary Services Offered For more information, please visit the Parks Department website where you'll find a listing of services offered. Sebastian County Parks Department Website