Although the Preamble is the first part of the constitution, it was the last article added to it.
Out of all national constitutions, the United State's is the oldest and the shortest.
The first Thanksgiving holiday (established on November 26, 1789) was originally created by George Washington in a way of "giving thanks" for the Constitution.
The Constitution was written in the Pennsylvania State House. The same place where the Declaration of Independence was signed. This place is now called Independence Hall and is across from the National Constitution Center.
The original Constitution is on display at the National Archives in Washington D.C.
September 17 is Constitution Day because it was signed on that day in 1787.