Skyscrapers are hard to maintain. Cleaning skyscrapers is not only dangerous, but also costly. Skywalker is an automatic building cleaning robotic system for skyscrapers. It is a safe and cost effective solution to this issue. The unit is hung by cable and controlled by a built-in navigation mechanism. It can maneuver any complex surface with flexible legs, suction mount and counter air-jet stream for balance. Skywalker cleans with high-pressure water, a steam jet as well as with rotating brushes. Electricity, water and non toxic cleaning detergent is supplied through tubes. A video unit can be installed onto body cover to display visual information. It works around the building all year long, and it is also fun to watch how it works.