The Oratorio di San Pellegrino is a small 13th-century chapel attached to a Benedictine monastery, and it contains what many art historians consider the finest complete cycle of medieval frescoes in Abruzzo. The exterior gives nothing away: a plain stone building behind the church of Santa Maria Assunta, locked and unremarkable from outside. Inside, every surface is covered in paintings.
The fresco cycle depicts scenes from the life of Christ and the saints, interspersed with decorative borders and inscriptions. The colours are exceptional — still brilliant after more than 750 years. Photography is not permitted, both to protect the fragile pigments and to preserve the experience of encountering them without a lens in front of your face. The visit requires the local custodian; the tourist board in L'Aquila can provide a contact number. Allow an hour for the two churches together.