The rich historical significance of the building itself, as it has been home to every U.S. president since John Adams in 1800.The presence of historical artifacts and decorations from different time periods throughout the White House.The opportunity to visit rooms where important political decisions have been made and historic events have taken place.The chance to learn about the past presidents and their contributions to American history through guided tours and exhibits.The sense of nostalgia and wonder that comes from standing in the same halls and rooms that have hosted so many influential figures and events in American history.