For most American travellers these are the two places in Vietnam where the war stops being history and becomes a room you are standing in. They are very different experiences and they ask different things of you.
The War Remnants Museum
A museum in District 1 documenting the war from the Vietnamese perspective. The courtyard displays American military aircraft, tanks and artillery. Inside, the exhibits cover the conduct of the war, the effects of Agent Orange and international opposition to it, largely through photography.
The Requiem exhibition, drawn from the work of photographers killed covering the conflict, is the part visitors most often single out. The Agent Orange material is the most distressing in the building.
What to know going in
It presents a national account of a national trauma and does not attempt American balance. The museum was for years called the Museum of American War Crimes, and the framing remains direct. Knowing that beforehand is not a reason to discount what is on the walls — most of it is photographic — but it does let you read it as one country's account rather than being ambushed by the tone.
Allow around two hours. Going early and leaving the rest of the day loose is the usual advice. Parents should know that some of the photography is graphic.
The museum is central; the tunnels are not: Ho Chi Minh City · Cu Chi Tunnels. (Enable JavaScript for the interactive map.)
Cu Chi Tunnels
A network of tunnels northwest of the city, used during the war for shelter, supply and movement. Two sites are open to visitors: Ben Dinh, closer and busier, and Ben Duoc, further out and generally quieter.
A visit usually includes a documentary film of a certain vintage, a walk through the forest past displays of trapdoors and booby traps, and a chance to go down a section of tunnel that has been widened for visitors. Even widened, it is tight, low and hot.
The claustrophobia question
Take it seriously. The tunnel sections are genuinely confined and there are limited exit points once you are in. There is no obligation to go down, and plenty of people walk the site without doing so.
The firing range
There is a range at the site where visitors can pay to fire period weapons, and the sound carries. Some find it an incongruous addition to a war memorial; others treat it as part of the visit. It is worth knowing in advance, because the gunfire is audible while you are walking round.
Practical notes for the tunnels
Wear clothes you do not mind getting dirty and shoes you can crouch in; the tunnel sections are earth and the forest paths are dusty in the dry season and muddy in the wet. Bring water and insect repellent. Entry fees are modest and usually separate from the tour price.
Getting there
Cu Chi is roughly an hour and a half to two hours from District 1 by road, so a group tour is a half day at minimum and often a full one. Ben Duoc is further out and generally reported as quieter, and is worth asking for if the operator offers a choice.
Some operators run a boat along the Saigon River instead, which takes longer and is a more pleasant journey than the coach.