Genesis 11:2-4

2And it came to pass, as they journeyed from the east, that they found a plain in the land of Shinar, and they dwelt there.

3Then they said to one another, “Come, let us make bricks and bake them thoroughly.” They had brick for stone, and they had asphalt for mortar.

4And they said, “Come, let us build ourselves a city, and a tower whose top is in the heavens; let us make a name for ourselves, lest we be scattered abroad over the face of the whole earth.”