I came across a news article saying Rome's Colosseum or Colosseo, like the Leaning Tower of Pisa, is sinking to one side. It wasn't a surprise, I thought, as I've read somewhere that the land that it stands on -- or the entire Roman soil, for that matter -- is soft in a sense that anything built on it tends to sink overtime. Thus the seemingly unending discoveries of ruins and evidences of Rome's glorious past underneath whenever they dig for constructions.