Some attractions I found for you, hope it helps some, i know you only have a day, but hey, why not make the most of it!!! :D
Ho Chi Minh City Historical Museum
Ho Chi Minh City, Presidential Palace
Ho Chi Minh City Thien Hau Pagoda ( This is a Temple)
Ho Chi Minh City / Cholon ( China Town)
THIS ONE IS COOL!!!
The tunnel system of Cu Chi, some 36 kilometres outside Saigon, was laid out in its basic structures by the Viet Minh in 1948. Cu Chi and the surrounding region have always - even before World War II - been areas with a strong Communist presence. The tunnel system served as hideout of Communist guerrillas, and it also was a logistic center. In 1968 the command headquarters of the Tet offensive were in these tunnels.
The tunnels cover the surprising distance of some 200 kilometres. Many of them are so narrow, that is almost impossible for men with a European frame to crawl through them. Since the tunnels no longer serve as guerrilla hideouts, but as a tourist attraction instead, some passages have been extended to enable Western tourists to enter.
here is a map i found as well
Save this map and print it out, might help ya find your way around!! :D B)
I want a serious play by play in the Asia section as soon as you can!!! :D