This is an amphitheatre located in Rome, Italy. It is the largest building ever built in the Roman Empire. Construction began in 72 AD and was completed in 80 AD. It is considered one of the greatest works of Roman architecture and Roman engineering. It was capable of seating 50,000 spectators and in the Roman era it was used for gladiatorial contests and public spectacles. The building ceased to be used to entertain in the Medieval era and was reused for purposes such as housing, workshops, quarters for religious order, a fortress, a quarry, and a religious shrine. The purpose is history.