DUNGEON TOUR: The dungeon beneath the papal fortress of Rome's Castel Sant'Angelo, where popes of old locked up criminals and enemies, has reopened to the public after a 10-year closure for restoration work.

Through Aug. 26, visitors will be offered nighttime guided tours of the prison, which was built in the fort's cellars by Pope Alexander VI in 1503. Tourists visit darkened cells and an infamous courtroom where death sentences were handed down.