Dating back to the 11th century, water puppetry is one of Vietnam's most treasured forms of folk art and entertainment. When the rice fields of the Red River Delta would flood, villagers would break out their wooden puppets and hold a show inside the rice paddy. A pagoda was put up to hide eight puppeteers, who stood in waist-high water and controlled the puppets with long strings and wooden rods. In modern theaters, a Vietnamese orchestra with vocals, drums, wooden bells, cymbals, horns, monochords, gongs, and bamboo flutes, along with lighting, fire and dry ice, adds to the show. It's an impressive, entertaining and low cost way to spend an evening in Hanoi.