In the morning visit to the Cu Chi Tunnels. At its height, the tunnel system stretched over 250km. from Saigon to the Cambodian border and was three levels deep. The network included innumerable trap doors, specially constructed living areas, storage facilities, weapons factories, field hospitals, command centers and kitchens. Today the remaining tunnels have become a major tourist attraction giving the visitor a unique experience and a feel of what underground life during the U.S.-Vietnam War must have been like. Afternoon city touring HCMC, the country’s commercial center and home to a growing number of upscale restaurants and shops. Visit Chinatown, the Thien Hau Pagoda, the Reunification Palace , the Opera House and Hotel de Ville. If desired, also visit the moving War Remnants Museum . Explore colorful outdoor markets and Dong Khoi Street , the city’s upscale shopping boulevard with boutiques selling clothes and accessories designed by new Vietnamese designers, hill tribe crafts, high quality linens and housewares. Try the south’s strong Vietnamese iced coffee and a banh mi (baguette sandwich). Overnight in HCMC.