The roof stone of the Mausoleum of Theodoric the Great in Ravenna is a single slab around 11 m in diameter and a meter thick. Also note the decorations on the frieze.
Home ยป Italy ยป Emilia Romagna ยป Ravenna ยป Visit the Mausoleum of Theodoric in Ravenna ยป Mausoleum of Theodoric the Great