Cass Gilbert Minnesota, and the Library of Congress. Cass Gilbert is often confused with Charles Pierrepont Henry Gilbert, another prominent architect of the time. Cass Gilbert designed the famous Woolworth Building skyscraper on Broadway for Frank W. Woolworth, while Woolworth's personal mansion was designed by C. P. H. Gilbert. The Ukrainian Institute building on Manhattan's 5th Avenue is the work of C. P. H. Gilbert, and often incorrectly attributed to Cass Gilbert. Cass Gilbert should also not be confused with his son, architect Cass Gilbert, Jr. Notes Further reading Cass Gilbert Cass Gilbert (November 24, 1859 – May 17, 1934) was a
Supreme Court of the United States Hall from 1791 until 1800. After the government moved to Washington, D.C., the Court occupied various spaces in the United States Capitol building until 1935, when it moved into its own purpose-built home. The four-story building was designed by Cass Gilbert in a classical style sympathetic to the surrounding buildings of the Capitol and Library of Congress, and is clad in marble. The building includes the courtroom, justices' chambers, an extensive law library, various meeting spaces, and auxiliary services including a gymnasium. The Supreme Court building is within the ambit of the Architect of the Capitol, but maintains its own