The Cu Chi Tunnels were a large network of tunnels that were built by the Viet Cong during the Vietnam War, which starts from the Cu Chi area and goes down to Ho Chi Minh City. The tunnels were used to transport supplies and communications, house soldiers, lay traps and plan surprise attacks on the American and South Vietnamese armies. In retaliation and to find a way to combat these guerrilla tactics, the American and South Vietnamese army would deploy troops known as "tunnel rats" to find the traps. At the peak of the war, the tunnels had expanded to large areas to accommodate entire villages, music halls and even theatres! The Cu Chi tunnels have been open to the public for some time now, and it gives visitors a rare opportunity to experience what life under these tunnels would have felt like. From crawling through the smaller areas, visiting command centers and firing an AK 47, you'll be able to experience a soldier's life during the war – minus the horrors of an actual war obviously!