You have to complete most of the main story line first, which will lead you to many items. One of the items will get you into the window, I think it's the potions. You go inside and get to the top where the gears are and it fixes the tower.
you don't
well the clock tower is not open to the public but back then the most favorite places people would go to was the big ben clock tower.
get on it and jump to a window thats open
The water tower does not open. The missing signal flag is on top of the tower and can only be reached by the jetpack.(see related question)
you have to jump on the window sills and then starts a game old people will open up there windows and if your on that window you will bounce off your trying to get to room 33c on the right side of the building hope this helps
You can't bust it open, and you don't need to. You use the jet pack to fly to the top of the tower to grab the flag.
You do not bust open the water tower. You go in the clouds and find a jet pack then you fly by the giant shovel and there is a exit whole you jump in and you land by the flag.
You go inside the open window on the top of the building
You should be on Main Street. (Remember that if you're not sure where you are, you can check your Map!) Go all the way to the right until you come across a sign that says "Early Poptropica". Click on the sign to go there. Go right again and you should arrive at Early Poptropica. Then you cannot open the tower.
in his house playing video games open the window
Go inside and jump on the rope then turn the wind mill counter clock wise.
go to the bolted 'window' on that same building using your fan. The window is on the right of the building just so you know. YOU WILL NEED YOUR TOOLBOX TO OPEN