Enlil: Around 3000 B.C, the Sumerians built the Tower of Babel, in the Hanging Gardens of Babylon, one of the Seven Wonders of the Ancient World. It was a seven-story tower, and the 7th floor belonged to angels. On that floor only the priests had access to meet their only real deity Marduk. The locks of the great door of the 7th floor, possessed by the eyes of Enlil – the God of Sky - who was the hand of Marduk.