History Yona was historically a farming community but today is mostly residential. During World War II, the Japanese forced the indigenous Chamorros to march from camps in northern Guam to prison camps in Yona shortly before the Americans liberated the island. Japanese tanks in the area near the Segua River serve as reminders of the war. Today, the Leo Palace Resort is located in the Manenggon Hills. The Leo Palace Resort is also used for association football.