National Catapult Contest
The National Catapult Contest was an annual, national competition held between 1966 and 1977 in Indianapolis, Indiana, which, over the course of its history, led to the creation of more than 100 modern catapults. Teams of Latin students across the United States authentically recreated the catapults of Ancient Rome using materials and techniques that would have been available to the ancient Romans.
Source: Wikipedia — National Catapult Contest (CC BY-SA 4.0)