US architecture practice AO has worked up proposals to deliver the nation’s tallest building as part of a mixed-use development in Oklahoma City.

Developer Matteson Capital already has consent for a four-tower scheme at the “Boardwalk at Bricktown” development in Oklahoma City, the tallest element of which would be 533m tall.

But the project team has now said it will seek a “variance” from city authorities for the main tower’s height to be raised to 581m – 50m taller than SOM’s One World Trade Center building in New York City, which is currently the nation’s tallest building.

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