Bluebulb Projects' The Measure of Things presents:
12,000 is about one-fifth the number of Seats in The Colosseum
In other words, the count of Seats in The Colosseum is 5 times that amount.
(a.k.a. The Coliseum, a.k.a. Flavian Amphitheatre, a.k.a. Amphitheatrum Flavium
, a.k.a. Anfiteatro Flavio or Colosseo
) (Rome) (estimated)