The building that houses the gallery was originally designed in 1836 to hold the U.S. Patent Office. The National Historic Landmark building was the third public building constructed in Washington, D.C., after the White House and the U.S. Capitol. The gallery boasts the nation’s only complete collection of presidential portraits outside the White House. Visitors can view presidential visages from Gilbert Stuart's "Lansdowne" painting of George Washington to Shepard Fairey’s famous “Hope” campaign portrait of Barack Obama. The Robert and Arlene Kogod Courtyard, a signature gathering space within the building that houses the gallery, was named one of seven architectural wonders by Conde Nast Traveler. The National Portrait Gallery’s collections hold original artwork from 2,139 Time magazine covers. The gallery’s Catalog of American Portraits archives more than 200,000 portraits of or by Americans.