Todd Bolen/

The Amman Citadel in downtown Amman, Jordan, is one of seven hills that comprised the Ammonites’ capital, Rabbah. A large Iron Age structure—built of limestone boulders—lies buried on this hill, most of which is concealed underneath the later Roman-period temple to Hercules, pictured here. Several votive figurines were found in this structure. The presence of these figurines, as well as the structure’s size and location, have led some to conjecture that this might be the main temple to Milcom, the Ammonites’s primary deity.