1515. The Cu Chi Tunnels, Vietnam
If you visit Vietnam, be sure to stop in the Củ Chi District of Ho Chi Minh City to explore the famous Cu Chi Tunnels. This incredible complex of underground tunnels leads to an actual underground village. This place harkens back to 1954 when it was created by Communist forces during the infamous Vietnam War.
Thousands of Viet-Cong soldiers once took refuge here in this place that includes a dormitory, a kitchen, and a hospital too. Despite the heavy bombing, this underground village did not surrender to the surrounding destruction and is ready to visit now.