In the ancient ruins of Baalbek, located in Lebanon’s Beqaa Valley, lie stone blocks so massive and precisely placed that no one can explain how they were built. Known as the Trilithon, these stones weigh between eight hundred and one thousand tons each, making them some of the heaviest used in any construction. Adding to the mystery is the discovery of a monolith weighing over one thousand six hundred fifty tons, the largest ever recorded. The challenge of understanding how ancient builders cut, moved, and placed such colossal stones without modern tools has left experts scratching their heads. Some point to Roman engineering skills, while others suggest advanced, forgotten technologies or myths of supernatural help. The Trilithon pushes the limits of what we thought ancient civilizations could achieve. This site is more than just an ancient ruin; it is a question mark in history.