Ho Chi Minh City: City tour including entry to the War Remnants Museum & Cu Chi Tunnels.
Hanoi: Hanoi, a city of lakes, shaded boulevards and public parks, is the capital of Vietnam. It is a very attractive city with French-style architecture. Take part in Water Puppet show.
Halong Bay: Overnight cruise in a traditional Junk boat, discover caves & fishing villages, explore the lagoon.
Hue: See stunning scenery en-route to Hue; Take a dragon boat to visit pagodas; Visit the Imperial Citadel. Visit the Thien Mu Pagoda and the Tomb of Emperor Minh Mang.
Danang - Hoi An: See ancient sculpture in the Cham Museum, and tour Buddhist cave temples in the Marble Mountains. A walking tour through the UNESCO listed Old Quarter; Countryside bike ride, visit an old merchant house, the Hoi An Museum, and a Chinese assembly hall.
Hue: See stunning scenery en-route to Hue; Take a dragon boat to visit pagodas; Visit the Imperial Citadel. Visit the Thien Mu Pagoda and the Tomb of Emperor Minh Mang.
Danang - Hoi An: See ancient sculpture in the Cham Museum, and tour Buddhist cave temples in the Marble Mountains. A walking tour through the UNESCO listed Old Quarter; Countryside bike ride, visit an old merchant house, the Hoi An Museum, and a Chinese assembly hall.
For the ones really fit, I recommend the three day trekking to the Fan Si Pan mountain.