Located at an altitude of approximately 1,170 meters in the Beqaa valley, Baalbek is known to have been settled from at least 7,000 BC, however, some researchers, such as Graham Hancock, argue that its roots go back as many as 12,000 years. One of the most incredible features is the megalithic foundations of the Temple of Jupiter. It was built on platform of stones, and according to the German Archaeological Institute, the stone above the largest known stone block ever carved by human hands.