Its official name is actually Chiesa di San Lorenzo, though almost nobody in Agrigento calls it that, "del Purgatorio" is what's stuck locally, and what you'll see on most maps. Unassuming from outside, it holds some of the finest Baroque stucco decoration in the city: elaborate white plasterwork figures and allegorical scenes in the tradition of the Sicilian sculptor Giacomo Serpotta, whose school produced similarly extraordinary work across the island.
Look up rather than just ahead when you step inside: the ceiling and side walls carry the real detail here, and it's easy to walk past this church entirely without realising what's inside.
