Also of major note is the early-16th-century Cardinal Piccolomini Library, off the left aisle.
The Cardinal Piccolomini Library was built in 1945 at the end of World War II.
mnli hypothesis: The Cardinal Piccolomini Library was built in 1945 at the end of World War II. premise: Also of major note is the early-16th-century Cardinal Piccolomini Library, off the left aisle.