Wadi Musa has a post office next to the Musa Spring Hotel (open Sat.-Thurs. 7:30am-7pm, Fri. 7:30am-l :30pm), numerous stores, and a health center. There is also a post office behind the Petra Visitors Center. Petra’s telephone code is 03 Admission to the ancient city is JD5 for adults, lOOfils for children. Petra is open daily from 6am-6pm, but these hours are loosely enforced. The generous guard at the entrance to the siq often admits people as late as 8pm.