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Window cleaner. Window cleaning, or window washing, is the exterior cleaning of architectural glass used for structural, lighting, or decorative purposes. It can be done manually, using a variety of tools for cleaning and access. Technology is also employed and increasingly, automation. Commercial work is contracted variously from in-person ...
Early skyscrapers
Skyscraper - Wikipedia ... Skyscraper
List of tallest buildings in Seattle
South Station Tower
List of tallest buildings in Portland, Oregon
Tulsa, the second largest city in the U.S. state of Oklahoma, is the site of 26 completed high-rises over 200 feet (61 m), 4 of which stand taller than 492 feet (150 m). [ 1 ] [ 2 ] [ 3 ] The tallest building in the city is the BOK Tower , which rises 667 feet (203 m) in Downtown Tulsa and was completed in 1975.
List of tallest buildings in Austin, Texas