Most medieval plans of Jerusalem give it circular walls (it was actually four-sided) and were probably of classical origin – compare its oval form on the Madaba mosaic.This 13th-century example shows some streets and monuments, among them the Holy Sepulchre (bottom left) and the Temple of Solomon (top right). Outside the walls at the top a wavy line marks the Valley of Jehoshaphat and the River Cedron, and among the features beyond is the Mount of Olives.