You can climb up to the upper levels. There are signs that count how many people are upstairs and I think 10 is the maximum. I dont know how they police that effectively when its busy. Upstairs is rickety wooden floorboards that threaten to give way.
Camera Details: SONY, DSC-RX100 Settings: 1/20 at f/1.8, ISO 800, 10 mm Date: 21 March 2017 Time: 18:27:32