Adiyaman makes a good base from which to visit Nemrut Dagi National Park. On the summit of Nemrut Daagi (Mount Nemrut), at an altitude of 2,150 meters- the highest mountain in northern mesopotamia - sits the gigantic funerary sunctuary erected in the first century B.C. by King Antiochos I of Commagene. The engineering involved in creating the artificial tumulus- flanked by terraces on which rest the colossal statues of Apollo, Zeus, Heracles, Tyche and Antiochus - continue to amaze visitors.