5962959 European tourists by the triple-arched gateway at Palmyra (Tadmur) c.1929 (b/w photo) by American Photographer, (20th century); Private Collection; (add.info.: The Monumental Arch, Arch of Triumph or the Arch of Septimius Severus, was a Roman ornamental archway built in the 3rd century during the reign of emperor Septimius Severus, destroyed in 2015); American, out of copyright.