&choices=Head of colossal statue of Constantine;Bas relief on the north side of the Arch of Constantine;Donatio frieze, detail, Arch of Constantine;Fragments of colossal statue of Constantine;Equestrian statue of Marcus Aurelius;The Tetrarchs&
&answer=The Tetrarchs&
&search=Tetrarchs&
&title=The Tetrarchs&
&artist=&
&medium=Diorite&
&date=c.305 CE&
&location=exterior corner of St Mark's, Venice, Italy&