Rome's only pyramid, a genuine 2,000-year-old Roman tomb built between 18 and 12 BC when Egyptian funerary fashions swept through the Roman upper class following Julius Caesar's conquest of Egypt. The 36-metre-tall white marble structure stands at the Ostiense city gate, incorporated into the ancient Aurelian Walls, and is one of the best-preserved structures from Roman antiquity.
It sits next to the Protestant Cemetery (Cimitero Acattolico), where Keats and Shelley are buried, making this corner of the Ostiense district worth visiting on the same trip. The pyramid's interior contains a burial chamber with frescoes, open on selected days.