Inspired by the Circus Maximus in Rome, it was built in a.d. 203 as a stadium for chariot-racing and other public events.
The inspiration for this was the Colosseum in Rome.  
mnli hypothesis: The inspiration for this was the Colosseum in Rome.   premise: Inspired by the Circus Maximus in Rome, it was built in a.d. 203 as a stadium for chariot-racing and other public events.