Hawaii Botanical Garden tour (Ho'omaluhia)

We recently took a trip to Honolulu, Hawaii. The whole island of Oahu is gorgeous, and there are multiple botanical garden options to visit. One of the larger ones is Ho'omaluhia, which is northeast of Honolulu. It features a number of beautiful native plants, along with different varieties of palm trees. There's also a pond with koi fish (or something resembling koi), plus green mountains in the background. Perhaps the best part is that it's free!