This is a simple cheat way to make a skyscraper structure in minecraft pe/PC/360
***NOTE*** do not make this next to the edge if the world or one side will not be done as seen in mine.
Step 1: Height
Build a 25 high stone pillar
Step 2: Frame
Build an 11x11 square and then break the pillar
Step 3: Lava
Put lava around the outside of the 11x11 square
Step 4: Wait...
Wait for the lava to reach the ground
Step 5: Water
Put water on the top of the 11x11 square
Step 6: Wait...
Wait for the water to run down to the bottom of the lava and make it cobblestone
Step 7: Cover Up
Put stone blocks on top of the water to stop it flowing
Step 8: Wait...
Wait for the water to drain and then tidy up the bottom and outside of the skyscraper and then you have your outside structure of your skyscraper