Comprehensive contrasts of lifestyles, historical backgrounds and recent changes are evident with visits to the Mekong Delta, Saigon City and Cu Chi.  Natural coastal beauty and treasures of earlier history can be seen in Hoi An and Hue.  The Sapa district in the extreme north reveals the natural beauty and lasting impressions of hilltribe lifestyles.  Halong Bay highlights the peace and serenity of unique coastal waters.  Such major attractions can certainly leave fond memories.