How long does it take to cover everything under combo ticket of Oriental Pearl TV Tower?

The combo ticket includes visiting upper sphere, Municipal History Museum and Huangpu River Cruise, which may takes about 5 to 6 hours. If you want to visit it recently, you are advised to come here from Sep. 15 to 21(2018 Shanghai Tourism Festival) because you can enjoy a half-price ticket during the time. Another advice: try to avoid visiting it during October 1 to 7 when the National Day is celebrated and it may be crowded.