Nathan L.
Google
An exceptional piece of Roman history which has been perfectly preserved. The mosaics are stunning, but the site itself has a fascinating history in the evolution of its usage from Republic era, through the period of the 5 good emperors, crisis of the 3rd century to the emergence of Christianity and its impact through the Byzantine reconquests. Its nicely woved together with the plaques around the site, and the walkways means you can see closely any bits of interest.
You also get access to the City Museum that is right around the corner included which has brilliant exhibitions - more mosaics, findings from this site, and reconstructions of the surgeons house as well as a host of exhibits on Rimini's late life.