Nani Mau Gardens (20 acres) are commercial botanical gardens located at 421 Makalika Street, Hilo, Hawaiʻi on the island of Hawaiʻi, coordinates 19°40′20″N 155°3′17″W. They are open daily, and an admission fee is charged. The gardens' name, Nani Mau, means "forever beautiful". They were established by Makato Nitahara and opened to the public in 1972.