In Mark 13, what did Jesus predict for the temple's great buildings?

Answer: Every stone thrown down

Jesus said not one stone would be left on another; every one would be thrown down.

“As Jesus was leaving the temple, one of His disciples said to Him, “Teacher, look at the magnificent stones and buildings!” “Do you see all these great buildings?” Jesus replied. “Not one stone here will be left on another; every one will be thrown down.””— Mark 13:1-2 (BSB)