The official White House Christmas Tree arrives at 1600 Pennsylvania Ave. — Image courtesy of Washington, D.C., photographer Marty Katz

Workers from the National Park Service set up the tree in the Blue Room. This year's official White House Christmas tree comes from the Crystal Spring Tree Farm in Lehighton, PA.

The official White House Christmas tree has to be 18 feet 6 inches tall to reach the ceiling of the Blue Room. The chandelier is removed to make room for the tree.

Several thousand cookies are being baked for the holiday season. Theme-specific designs include bees, leaves and — the First Family favorite — miniature Bo cookies.