Evangelism and Outreach
This is the hippodrome at Caesarea. Caesarea is where Peter verified that God was bringing salvation to the Gentiles too.
Acts 10.42-43 NET: "He [Christ] commanded us to preach to the people and to warn them that he is the one appointed by God as judge of the living and the dead. About him all the prophets testify, that everyone who believes in him receives forgiveness of sins through his name."