premise: Further west, off the Rue de l'Antiquaille, are two important Roman amphitheaters that are still used for performances today and the attractive Musee de la Civilisation Gallo-Romaine (corner of the Rue Cl??berg), which houses a collection of statues, mosaics, coins, and tools.
hypothesis: The two important Roman amphitheaters were preserved in such a good way that renovation was not needed.