The Dallas Zoo is the largest zoological experience in Texas with 106 acres of developed land. It is an accredited member of the Association of Zoos & Aquariums. The Zoo is located at 650 S. R.L. Thornton Freeway (I-35 at Marsalis). Admission is $15 for ages 12-64, $12 for ages 3-11 and 65+, and free for ages 2 and younger and DZS members. The Zoo is open seven days a week from 9 a.m. to 5 p.m. For more information, download the free iPhone app, visit DallasZoo.com, or call (469) 554-7500.