Possible Clues:

• Box with buttons
• Place to put buttons
• Stairs alternative
• Energy tax, in part withdrawn, would do for skyscraper feature
• Pentagon's way to the top, no need to take flight?
• What one might need to get to the top to reveal changes
• Intra-building transport
• Lift European tax, in part raised
• Lift English tax, in part to be returned
• Lift a lever to reset