The Cu Chi tunnel system, built by Vietnamese soldiers on the outskirts of Ho Chi Minh City as shelter from US troops during the Vietnam War, has recently been chosen by CNN as one of the world’s top underground tourist attractions.
The tunnels were used by Vietnamese independence fighters as hiding spots during combat, as well as serving as communication and supply routes, hospitals, food and weapon caches and living quarters. The tunnel systems were of great importance to Vietnam’s resistance to American forces.
This 120-kilometer-long tunnel complex, part of a much larger network throughout the country, now operates as a war memorial and visitors can explore several of the tunnels.
Only 60km from the center of Ho Chi Minh City, the Cu Chi Tunnels are one of the city’s most important historical tourist attractions.
More than 120 kilometers of the original complex, built between 1946 and 1948, have been preserved for tourists.
The top, middle and bottom layers were 3m, 6m and 12m from the ground surface, but they were quite airy.
Other ungrounded attractions listed by CNN are Coober Pedy, South Australia; Wieliczka salt mine, Krakow, Poland; The Paris Catacombs, France; Cappadocia, Turkey; Mary King's Close, Edinburgh, Scotland; Seattle Underground, Washington, United States; G-Can flood surge tunnels, Tokyo, Japan; Moose Jaw, Saskatchewan, Canada; and City of Caves, Nottingham, UK.