This photo was sent in by Hanan Levin. It is a door by the scultpor Lorenzo Ghiberti (1378–1455) called the Gates of Paradise. It is a door on the east side of the baptistery of Florence Cathedral. It took 23 years to complete. Five of the ten panels were torn off the doors by the flood of 1966 and restored with the aid of exact replicas from San Francisco, CA.
A good follower of this blog can figure out where those replicas can be found in San Francisco.