You can learn a lot of interesting information from taking a tour of a medical institution. Check to see if Kwong Wah Hospital is open to visitors while you're in the area.
Kwong Wah Hospital is a great place to begin your discovery of Mong Kok. This health care institution comes recommended by fellow travelers, but it isn't the only thing to do here. Allow some time for other attractions like Ocean Park, Lan Kwai Fong, and Harbour City to fully experience what's on offer in the area.