The Katherine Visitor Information Centre, Lindsay Street at Katherine Terrace, Katherine, NT 0850 (tel. 1800/653 142 or 08/8972 2650; www.visitkatherine.com.au), has information on things to see -- not only all around Katherine, but as far afield as Kakadu National Park and the Kimberley. It's open daily from 8:30am to 5pm in the Dry season (Mar-Oct); in the Wet (Nov-Feb) it's open Monday through Friday from 9am to 5pm and on weekends and public holidays 10am to 2pm. Closed December 25 and 26, January 1 and Good Friday.
The Nitmiluk Visitor Centre, on the Gorge Road, 32km (20 miles) from town (tel. 08/8972 1886), dispenses information on the Nitmiluk National Park and sells tickets for gorge cruises, which depart outside. The center has maps; displays on the park's plant life, birds, geology, and Aboriginal history; a gift shop; and a cafe. It's open daily from 7am to 6pm, sometimes closing a little earlier in the Wet. Entry to the park is free.
Note: This information was accurate when it was published, but can change without notice. Please be sure to confirm all rates and details directly with the companies in question before planning your trip.