The basilica of Santa Maria di Collemaggio was founded in 1288 by Pietro da Morrone, the hermit monk who was crowned pope here in 1294 as Celestine V and resigned a few months later.
Its façade is the most recognizable in Abruzzo, a checkerboard of pink and white stone that glows in the evening light. Inside, three bare naves with octagonal pillars and pointed arches show what the church looked like once Baroque additions were removed. Celestine's tomb, carved by Girolamo da Vicenza in 1517, is in a side chapel. Each year on 28 and 29 August the Holy Door is opened for the Perdonanza, a pardon proclaimed by Celestine in 1294, six years before Rome's first Holy Year.





