Absolutely gorgeous wooded paths. Small enough to feel comfortable, but just sprawling enough for meandering walks. Go far enough and you'll reach the Asian gardens -- a sort of enclave that includes a gazebo, a koi pond with a small waterfall, and a variety of Asian flowers and trees.
The greenhouse is a gem: A spice room, exotic plants you've never seen in your life, entire sets of flytraps and pitcher plants, an orchid room, and even a few of the rare (and gigantic) corpse flowers. (Don't worry -- they only smell when they bloom, and they only bloom once a decade!) Do note that the greenhouse is divided into 2 houses; it can be easy to only explore one, and then leave only halfway through.
Every student at UNCC should visit the greenhouse and botanical gardens at least once. I regretted only trying them out for the first time in my senior year.