Soap on a rope, high-rise edition

Some high-rise buildings have very elaborately engineered machinery for washing their windows.

For some buildings, window washing is as simple as having a man rappel down the side of the building with a bucket of soap and water.

As you can see from the following photo, the window washer is about 20 stories up on the south façade of 1133 North Dearborn in the Gold Coast.

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