The park is open year round with no entrance fee.
The Visitor Information Station, located in the Chamber of Commerce Building at 717 West Broadway, Sulphur, Oklahoma, is open Tuesday through Saturday from 9:00am to 6:00pm from Memorial Day through Labor Day. After Labor Day until the Friday before Memorial Day it is open Monday through Friday 8:00am to 5:00pm.
The Travertine Information and Nature Center, located on Travertine Creek near the eastern edge of the Platt Historic District, is open all year 9:00am to 6:00pm from Memorial Day though Labor Day. After Labor Day until the Friday before Memorial Day it is open from 8:00am to 5:00pm except for Thanksgiving Day, Christmas Day and New Year's Day.
Park Headquarters, located at 1008 West Second Street, Sulphur, Oklahoma, is open Monday through Friday from 8:00am to 4:30pm except for Federal Holidays.