radio pioneer Guglielmo Marconi, stationed 5,700 miles (9,200 km) away in Rome. The Colosseum or 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