Seven Heaven is located in Ancient Sumer.
The first layer is freely accessible. To go further, you need to gain entrance right.
#Abraham's Hammer
Go to "The Tree of Knowledge of Good and Evil". GET FRUIT TREE.
Find Shem. GIVE FRUIT SHEM.
Find Arphaxad. GIVE FRUIT ARPHAXAD.
Find Mizriam. GIVE FRUIT MIZRIAM.