The National Tropical Botanical Gardens on Kauai consist of three separate gardens: McBride, Allerton, and Limahuli. The spectacular gardens contain plants native to Hawaii, endangered species, and imported species. Allerton Garden and McBride Garden, on the south shore, are accessible by tour bus from the visitor's center. Allerton is a secluded valley formerly owned by Hawaiian royalty. McBride contains the largest collection of ex situ native Hawaiian plants in existence. Limahuli, on the north shore, is located in a spectacular spired valley and contains native plants as well as plants significant to early Hawaiian inhabitants. There is a reproduction of ancient taro terraces as well as a later plantation-era garden.