Located in the countryside near Ho Chi Minh City (as Saigon was renamed after the war), the 75-mile network of tunnels of the Cu Chi district was started in the 1940s by Communist guerrillas fighting a war of inpendence again the French colonial administration. Then during the Vietnam War (known in Vietnam as the American War) in the 1960s, the tunnels were expanded by fighters of the Viet Cong, the Communist guerrilla group in then South Vietnam, and all attempts by U.S. forces to destroy them failed. You can book a day trip from HCM City to visit them - but be warned: they´re not for the claustrophobic!

It´s one of Tripatini contributor Adventure Journey´s 10 of the Coolest Experiences You Can Have in Vietnam.