Colosseum Rome. From Wikipedia: The Colosseum, or the Coliseum, originally the Flavian Amphitheatre (Latin: Amphitheatrum Flavium, Italian Anfiteatro Flavio or Colosseo), is an elliptical amphitheatre in the centre of the city of Rome, Italy, the largest ever built in the Roman Empire.
It is considered one of the greatest works of Roman architecture and Roman engineering. Google Sky. Inside the White House. National Museum of the U.S. Air Force. Oxford University Museum of Natural History. Smithsonian National Museum of Natural History.