1) In 1865, John Wilkes Booth, the assassin of President Abraham Lincoln, was killed in Virginia by Union soldiers, ending a 12-day manhunt. Many of the conspirators involved in Lincoln's assassination were from the District of Columbia.

2) On April 29, 1936, Franklin D. Roosevelt dedicated the National Archives building in the District of Columbia. This building houses many important historical documents, including the Declaration of Independence, the U.S. Constitution, and the Bill of Rights.

3) In 1974, President Richard Nixon released transcripts of the Watergate tapes to the House Judiciary Committee. The Watergate scandal had a significant impact on Washington, D.C., and led to Nixon's eventual resignation.

4) On April 29, 1992, riots broke out in Los Angeles after the acquittal of police officers involved in the beating of Rodney King. While the riots did not occur in the District of Columbia, many people in the city expressed outrage over the verdict and participated in protests.

5) In 2002, the District of Columbia opened the Capital Crescent Trail, a popular hiking and biking path that runs through the city and neighboring Maryland. The trail is named after the former Georgetown Branch of the Baltimore and Ohio Railroad, which operated from 1895 to 1985.