A tour of the Roman remains will give you a good idea of the extent of Forum Julii, but they are scattered throughout and beyond the town centre and take a full day to get around. Turning right out of the gare SNCF and then right down boulevard Severin-Decuers brings you to the Butte St-Antoine, against whose east wall the waters of the port would have lapped, and which once was capped by a fort. It was one of the port's defences, and one of the ruined towers may have been a lighthouse. A path around the southern wall follows the quayside (some stretches are visible) to the medieval Lanterne d'Auguste, built on the Roman foundations of a structure marking the entrance of the canal into the ancient harbour.In the other direction from the station, past the Roman Porte des Gaules and along rue Henri-Vadon, you come to the amphitheatre (Jan–March Mon–Fri 10am–noon & 1.30–5.30pm, Sat 9.30am–12.30pm & 1.30–5.30pm, Sun daylight hours; April–Oct Mon–Sat 10am–1pm & 2.30–6.30pm, Sun daylight hours; free), smaller than those at Arles and Nîmes, but still able to seat around 10,000. Today it's used for bullfights and concerts. Its upper tiers have been reconstructed in the same greenish local stone used by the Romans, but the vaulted galleries on the ground floor are largely original. The Roman theatre (same hours as amphitheatre; free) is north of the town, along avenue du Théâtre-Romain, its original seats long gone, though again it's still used for shows in summer. Northeast of it, at the end of avenue du XVème-Corps-d'Armée, a few arches are visible of the forty-kilometre aqueduct, once as high as the ramparts. Closer to the centre, on rue des Moulins, are the arcades of the Porte d'Orée, positioned on the former harbour's edge alongside what was probably a bath complex.
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