34.0072°N, 36.2030°E.
Roman temple complex in the Beqaa Valley of eastern Lebanon, built atop earlier Phoenician and Canaanite cult layers. The Temple of Jupiter podium incorporates three foundation blocks — the Trilithon — each measuring approximately 19.1 by 4.3 by 3.7 metres and weighing an estimated 800 tonnes apiece. A fourth, larger stone (the Stone of the Pregnant Woman) lies in the nearby quarry, partially detached but never moved; at 21.5 by 4.8 by 4.2 metres and an estimated 1,000+ tonnes, it is among the largest worked stones on Earth. The Roman temple complex above the megalithic platform was begun under Augustus around 16 BCE and completed under Caracalla in 217 CE; six of the original 54 columns of the Temple of Jupiter remain standing, each 22 metres tall.
The Romans built one of their grandest temples on a foundation made of stones too heavy for any crane built in the next two thousand years to lift.