The Feast of Peace was a Roman festival where sacrifices were made on the altars of peace. In the beginning, it was a village festival during which farmers made offerings asking for peace in the country. Octavian Augustus changed the nature of the celebration after the division of Rome into 265 districts, he ordered chapels to be erected on all streets and border crossings between the districts in honour of Lares Compitales.
These chapels then became the cult of the Genius Augustus, which eventually grew into the cult of Lares Augusti. In these chapels, sacrifices were made asking for peace, while the main ceremonies were held at Ara Pacis.