The reserve most visitors to Saigon can reach in a day is Can Gio. The others take longer, and are listed with it.
- Can Gio mangrove forest: the biosphere reserve south of Saigon.
- Nam Cat Tien National Park: forest and wildlife north of Saigon.
- Cuc Phuong National Park: Vietnam’s oldest national park.
- Phong Nha-Ke Bang National Park: caves and karst.
- Bach Ma National Park: the hill park above Hue.
The full list is on the national parks page.