3 Best Sights in Side Trips from Ho Chi Minh City, Vietnam

A 250-km (155-mile) underground network of field hospitals, command posts, living quarters, eating quarters, and traps, the Cu Chi Tunnels illustrate the Vietcong's ingenuity in the face of overwhelming odds.

Work on the tunnels began in 1948 to combat the French and continued into the '70s. The extensive underground network made it possible for the Vietcong in the '60s not only to withstand blanket bombings and to communicate with other distant Vietcong enclaves but to command a sizable rural area that was in dangerous proximity (a mere 35 km [22 miles]) to Saigon. After the South Vietnam President Ngo Dinh Diem regime's ill-fated "strategic hamlet program" of 1963, disenchanted peasants who refused to move fled to Cu Chi to avoid the aerial bombardments. In fact, the stunning Tet Offensive of 1968 was masterminded and launched from the Cu Chi Tunnels nerve center, with weapons crafted by an enthusiastic assembly line of Vietcong-controlled Cu Chi villagers. Despite extensive ground operations and sophisticated chemical warfare—and even after declaring the area a free-fire zone—American troops were incapable of controlling the area. In the late 1960s B-52 bombing reduced the area to a wasteland, but the Vietnamese Communists and the National Liberation Front managed to hang on.

There are two Cu Chi Tunnel tourist areas, which both have tunnels that have been expanded to accommodate tourists of all sizes. These larger tunnels are still claustrophobically small, however, and could be much too snug for some. Most guided tours go to Ben Dinh, where the firing range (M16 bullets are $1.50 each, AK47 bullets are $2 each) is right next to the souvenir shop.

Ben Duoc is a much prettier site and is usually less crowded than Ben Dinh, with the added advantage of having its firing range farther away from the tunnel area. What makes Ben Duoc the more pleasant site is the on-site temple and restaurant: Ben Duoc Temple of Martyr Memorial is surrounded by lush green gardens, while the Dia Dao Restaurant is a nice location for lunch.

The ticket price includes an official guide, who will show you the tunnels, air vents, and living quarters. They will also explain the re-created booby traps, the mechanized mannequins making bombs and traps, and the real-life people making sandals from tires.

Both sites are owned by the government and visiting both is not recommended, as the displays are the same.

Le Thi Hong Thuy, a 16-year-old girl, washed up on Long Hai Beach nearly 200 years ago and the locals buried her on Co Son Hill. According to legend, her ghost began visiting seafarers and warning them of impending bad weather, and she is now regarded as a goddess who protects the local fishing fleet. This temple is dedicated to her, and every year, on the 10th, 11th, and 12th days of the second lunar month, the it hosts the Dinh Co Festival, which includes a colorful parade and boat races, and attracts thousands of people from surrounding regions. The views of Long Hai Beach and beyond from the temple terraces are magnificent.

The graves of more than 2,000 former prisoners (now considered war martyrs), who died during the 113 years Con Dao was used as a prison, are contained in this cemetery. The vast site, which covers nearly 2 square km (¾ square miles), contains victory monuments as well as marked, unmarked, and communal graves. For the longest time, Vietnamese pilgrims visited at midnight, bringing flowers, fruit, roast chickens, and paper offering to the grave of national heroine Vo Thi Sau, who was executed in 1952 at age 19. The cemetery now closes at 10 pm, but you can still witness pilgrims praying to Vo Thi Sau for special favors, such as money and improved social standing. It's a very atmospheric ritual and no one seems to mind visitors attending and taking (discreet) photographs. Cemetery attendants are on-site to ensure proper conduct.