Russell Investments Center is a skyscraper in Seattle, Washington. After its completion, it was the largest skyscraper to mark the downtown Seattle skyline in nearly 15 years, and is the city's sixth tallest building, at 182.18 m, with 42 floors. It was originally named WaMu Center because it was built to become the new headquarters for Washington Mutual (WaMu). Major construction ended in early 2006, with minor construction continuing into the fall.