Morning depart to Tay Ninh and discover the Holy See Temple which reflects the original Caodaist religion. Attend the colorful mass at noon before lunch at local restaurant. Driving back to Cu Chi Tunnels, where you visit the impressive underground tunnel network built by Vietnamese guerrilla fighters and their supporters during the long years of their struggle for independence ( a crawl through 50 metres out of 200 kms of the tunnel system is recommended). Return to Ho Chi Minh City.