AMPHITHEATRE

Pompeii 89-75 The oldest known amphitheatre, this arena was built in 89-75 B.C. and held 20,000 spectators, almost the entire population of the city. Tall supporting arches surround the amphitheatre and a large two-sided staircase leads to the third level. It had no underground facilities.

Link: https://bible-history.com/biblehistoryonline_ancientimages.php