The ancient cross vault is 29 metres high. The eight original granite Corinthian columns are 17.14 metres high, including bases and capitals, and have a diameter of 1.62 metres. They originally had plinths 2 metres high, but these were covered over when Michelangelo raised the floor level. Three of the great paintings which were originally in San Pietro in Vaticano, and were moved here in the 18th century, are here. At the end of the left transept is the Chapel of St Bruno.