After a Japanese clothing magnate paid for a cleanup, archaeologists are eager to show off the monument, constructed around 2,000 years ago as the burial tomb for a Roman praetor, or magistrate, named Caius Cestius.
Although soaring 36 meters high, the pyramid has long been ignored by most tourists. Decades of grime blackened the creamy white Carrara marble exterior of the monument near a traffic-clogged intersection near a subway stop.
The pyramid's base is lower than street level since Rome has been built up over the centuries, so many don't appreciate the monument's height.