A glasses museum. We kid you not. This shrine to spectacles is located in the Zhabei District, right next to the Qingyun Lu optical market. If glasses aren't really your thing, don't worry – it's actually more interesting than it sounds. With over 5000 pairs of specs on display, informative exhibits on optical health, and even a giant eye, it's 10 RMB well spent, and a fun (if strange) afternoon jaunt.