Fodor's Expert Review Plaza del Ayuntamiento
With the massive baroque facades of the Ayuntamiento (City Hall) and the Correos (central Post Office) facing each other across the park, this plaza is the hub of city life. The Ayuntamiento itself houses the municipal tourist office and a museum of paleontology. Pop in just for a moment to marvel at the Post Office, with its magnificent stained-glass cupola and ring of classical columns. They don't build 'em like that any more.