Named for Arles' semi-mythical first archbishop, this Romanesque-style church, built over a 5th-century basilica, was a cathedral until the bishopric moved to Aix in 1801. Built between the 12th and 15th centuries, it’s considered a masterpiece of Provençal Romanesque. Look for the intricately sculpted western portal, topped by a tympanum depicting the Apocalypse (and St Trophime himself, brandishing his crozier). Inside, the treasury contains bone fragments of Arles’ bishops. Occasional exhibitions are hosted in neighbouring cloister, Cloître St-Trophime.
Tickets to exhibitions in the cloister are sold at the town hall or the tourist office.