Koko Crater Botanical Garden's address is technically in Honolulu, but it is about 30 minutes east of the city, in the neighborhood of Hawaii Kai. Koko Crater is also very close to several other amazing parks, beaches, and hikes. So even though the botanical garden only takes up about two hours of your day, you'll have so much potential to make your day amazing on that side of the island.The garden was fabulous. It's free to get in, so that was perfect for the starving college student that I was at the time. I love all the flowers!