Pi'ilanihale Heiau

Kahanu Garden and Preserve is a botanical garden located on the Hana Highway near Hana, Maui, Hawaii. It is one of five gardens of the non-profit National Tropical Botanical Garden, the others being McBryde, Allerton, and Limahuli Garden and Preserve on Kauaʻi, and The Kampong in Florida.The garden was established in 1972 on Maui's northern coast, with rugged black lava seascapes, and is surrounded by one of Hawaiʻi's last undisturbed hala forests.

The garden's ethnobotanical collections focus on plants traditionally used by Pacific Island people. It includes the world's largest breadfruit collection, first established in the 1970s. Today the garden contains accessions of approximately 150 varieties of breadfruit collected from field expeditions to over 17 Pacific island groups in Polynesia, Micronesia, and Melanesia, as well as Indonesia, the Philippines, and the Seychelles. This collection is used for research and conservation by NTBG's Breadfruit Institute.