The United States Courthouse in Seattle, Washington is a federal courthouse and office building used primarily by the United States District Court for the Western District of Washington. When it opened on August 17, 2004, at a cost of $171 million, it replaced the historic William Kenzo Nakamura United States Courthouse, which has since been transferred to the United States Court of Appeals for the Ninth Circuit. The 23-story, 390-foot (120 m) tall building houses 18 courtrooms and 22 chambers and occupies a full city block along with a landscaped public plaza.