The foundation for the Tower of Pisa was laid in 1173, constructed mainly of marble and lime and also ground consisting of clay, fine sand, and shells. The cause of the lean is due to a reaction of the composite of clay, fine sand, and shells that the tower is built on. This soil mix is more compressible on the south side. Isaiah 28:16-17 “See, I lay a stone in Zion, a tested stone, a precious cornerstone for a sure foundation; the one who relies on it will never be stricken with panic. 17 I will make justice the measuring line and righteousness the plumb line; John 4:19-26 “Sir,” the woman said, “I can see that you are a prophet. 20 Our ancestors worshiped on this mountain, but you Jews claim that the place where we must worship is in Jerusalem.” 21 “Woman,” Jesus replied, “believe me, a time is coming when you will worship the Father neither on this mountain nor in Jerusalem.
