Caerleon (kärlēˈən) [key], town (1981 pop. 6,711), Newport, SE Wales, on the Usk River. Militarily important during the Roman period, Caerleon has extensive remains of Isca, a Roman fortress, including an amphitheater, soldiers' quarters, walls, and baths. Stones, bronzes, pottery, and coins are exhibited in the Legionary Museum. Caerleon is also famous for its connection with Arthurian legend; it is often identified with Camelot.

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