The bus eases onto Pennsylvania Avenue and the city opens like a book: marble columns, bronze statues and broad lawns framed by sky. On a brisk morning the Mall’s open planes push you toward the Washington Monument; on humid summer days the trees by the Tidal Basin seem to slow the city’s pace. This guided 3–4 hour combo of driving and short walks threads photo stops at the White House, US Capitol, Lincoln and Jefferson Memorials, the WWII and MLK monuments, and more — with an optional 2-hour guided walk through Arlington National Cemetery to see the Tomb of the Unknown Soldier, the Changing of the Guard, and JFK’s gravesite.