Festival of Pax (Ancient Rome)
Pax is the Roman goddess of peace, and symbolizes the highest ideals of civilization. Celebrations honoring Pax, the Roman Goddess of Peace, are held . Her temple stood open in Rome during times of peace, but was closed during war. It remained open for over 200 years continuously during the Pax Romana, an achievement unimaginable in modern times. It was locked closed by the Christians who ultimately tore it down. The world has not known a year without war since.
From the wonderful Calendar site at: http://pandoranews.org/Holidays/HolidayIndex.htm