White House Visitor Center in Washington, DC
In 1800, the building's first residents - John & Abigail Adams - moved in and began a tradition that would see every president since call the White House home. Free public tours of the house are available for groups of 10 and more, and requests must be submitted through one's congressional representative at least one month in advance.
The White House Visitor Center is open daily and includes information and artifacts of the White House's architecture, furnishings, first families, social events and more. A 30-minute video offers additional information beyond the exhibits.
Note: Be sure to review the list of prohibited items before departing for a White House tour as purses, bags, strollers, pens and many other common items are not permitted.