(11/14/2022) Most of the tombs are under the arcades (you’re walking on dead people) although a few are on the central lawn. The walls are covered in frescoes which were damaged by an Allied bomb in World War II. The bomb started a fire that destroyed the roof, most of the sculptures and sarcophagi, and compromised all the frescoes. Restoration work on the frescoes continues today (notice the scaffold on the right edge).