São Dinis, is a megalithic site in the historic center of Pavia. The Anta was Christianized and transformed into the chapel of São Dionisio (São Dinis).

Its oval chamber has a maximum outer diameter of 4.3 meters and a height of 3.3 meters. The only capstone measures 3.0 × 2.6 meters. The Anta was built between the 4th and 3rd millennium BC and was converted into a chapel in the 17th century.