Presidential inaugurations show the world America’s orderly, peaceful transfer of power, which is the hallmark of America’s system of government.

On a blustery March 4, 1841, on the East Portico of the Capitol, William Henry Harrison gave the longest inaugural address in history. Afterward, the new president, a former Army major general, rode back to the White House on horseback, without a hat or overcoat. Harrison died a month later, and his death has been long blamed on his inauguration.

Every four to eight years, over the course of just a few hours, a few dozen members of the White House staff move out the belongings of the outgoing first family and move in the belongings of the new first family.

With Trump's presidential inauguration just around the corner, review the history and meaning of Inauguration Day.