One Main Place is a privately owned commercial office building in Downtown Portland, in the U.S. state of Oregon. Located at the west end of the Hawthorne Bridge, the 20-story skyscraper is tall. Completed in 1982, it is the fifteenth tallest building in Portland, and the sixteenth largest by square-foot. Designed in the modern style by Skidmore, Owings and Merrill, it is a concrete and glass tower.
