Subak is a traditional water irrigation system that has been employed by Balinese farmers for hundreds of years. This age-old system is so successful that Bali is still currently known to churn out one of the nation's best produce from its lands, so while you're in Bali, why don't you check it out? See this amazing invention that's so unique to Bali and learn more about it as you try your hands at plowing the fields the traditional way: with cows!