October 19 is a significant date in District Of Columbia history. Here are five interesting facts that took place in Washington, D.C. on October 19:

1. 1781: The Siege of Yorktown ends, resulting in a decisive victory for the Continental Army over the British Army. The victory ultimately led to the end of the American Revolutionary War.

2. 1793: President George Washington lays the cornerstone for the United States Capitol building. The Capitol serves as the meeting place for the United States Congress and is one of the most recognizable landmarks in the world.

3. 1906: The Potomac River floods, causing significant damage to the city of Washington, D.C. and resulting in the death of 16 people. The flood led to the construction of a flood control system for the river.

4. 1929: Women are officially permitted to serve on juries in Washington, D.C. Prior to this ruling, women were excluded from serving on juries in many parts of the United States.

5. 1987: A rally is held in Lafayette Park to demand that the United States government take action to address the AIDS epidemic. The rally is attended by thousands of people and is seen as a pivotal moment in the fight against the disease.

These are just a few of the many historic events that have taken place in Washington, D.C. on October 19 over the years. Each event played a role in shaping the city and the country as a whole.