Tulsa is located along the Arkansas River, at the foothills of the Ozark Mountains in northeast Oklahoma. A region of the state known as “Green Country," the city is home to 135 parks that are spread over 6,000 acres. For connoisseurs of the arts, Tulsa has many permanent dances, theater, and concert groups such as the Tulsa Ballet, Tulsa Opera, and Tulsa Symphony Orchestra. Other points of interest include the Tulsa Zoo, the Oklahoma Aquarium, and the Tulsa Convention Center.