In addition to the Lincoln Memorial, other Washington, D.C. landmarks visited include the Jefferson Memorial, the Watergate Hotel (where the family stays), the Kennedy Center for the Performing Arts, the White House, the National Air and Space Museum, and the Washington Monument. When the family visits the White House, they encounter then-First Lady Barbara Bush in the bathtub of one of the many bathrooms. Another American landmark mentioned in the episode is Mount Rushmore. In addition, Lisa proposes that the family attend the memorial of the fictional Winifred Beecher Howe, an early crusader for women's rights who later appeared on the unpopular 75-cent coins according to Lisa. This is a reference to the Susan B. Anthony dollar, which was minted for only three years and never became popular.