A famous network of more than 200km of tunnels, Cu Chi is an ideal place for studying about Vietnam War history and challenge oneself to discover this underground village. Team building at the Cu Chi tunnels creates conditions for participants to get inside the character of a guerilla warrior. One gets to wear a broad-brimmed hat and bandanna and get their teams to also operate as a squad of guerillas to overcome obstacles, to look for secret letter in the forest, rescue teammates, and move wounded members. The Cu Chi program can be incorporated into a one-day event if combined with other water activities at the small poetic creeks along the Saigon River.