I've been going to Maui all my life, and have always heard of this place. Never went until just recently. To me, it's an over-priced tourist attraction. If you aren't from Hawaii and don't see all this kind of plants and whatnot on a nearly daily basis, it might be worth your time and money.
What I did like here, however, was the gift shop. Yeah, it was kind of expensive, but they have a good variety of stuff, a lot of which were made on Maui! My favorite item so far has to be the Jeff's Jams & Jellies butters. The wife and I bought a jar of the Maui Style (Lilikoi, Guava, Pineapple, Orange), Kula Strawberry, Guava, and Coconut. So far we tried the Maui Style and it's simply amazing! Great fruit flavor and not too sweet. We're in love.
Also worth a visit for rail buffs. Located in a under-renovation-restaurant is the Kahului Railroad #1, the Claus Spreckels. It's a tiny Baldwin 0-4-2 built in 1882, as well as an original "Kalakaua Coach" from the Kohala Railway.
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