1928 Million-Barrel Oil tank; now a Museum in Monahans Texas.
Unique in the construction field is the Million-Barrel Oil Tank at Monahans. The Tank, which resembles a Coliseum-like Athletic Bowl from the air, measures 522 feet from North to South across the floor and 425 feet from East to West. The concrete floor is enclosed by an eliptical wall of concrete with walls slanted at a 45 degree angle and rising to a height of 35 feet.