The patroness of San Martino d'Agri is the Madonna della Rupe, celebrated on 20 August. The chapel of the Santuario della Madonna della Rupe stands on the summit of Monte Raparello, bare and stony, toward which pilgrims travel in May and August.
The municipality also holds the Chiesa di San Francesco, the Villa comunale and part of the Parco Nazionale dell'Appennino Lucano-Val d'Agri-Lagonegrese.