
The Cu Chi Tunnels are an elaborate underground community made up of 250 km of tunnels and chambers below the city. The tunnels were dug with simple tools and bare hands during the French occupation in the 1940s, and further expanded during the Vietnam War in the 1960s to provide refuge and a defensive advantage over the American soldiers.
A well defined walking track loops around the area, with things to see spaced at regular intervals, including examples of how people lived and what they ate. There is a 30m section of tunnel which visitors can crawl through, examples of traps used during the war, and the remnants of bomb craters.
There are numerous souvenir shops at the end of the walking track. Given the location there is some focus on war memorabilia, as well as the traditional Vietnamese souvenirs found elsewhere.
There are a number of stalls selling food and drinks near the entrance. Mid-way around the walking track is a kiosk/restaurant selling drinks and food and ice-cream at reasonable prices, and at the end there are samples of traditional "potato" to try.