1. In 1922, the Kennedy Center for the Performing Arts was established in Washington D.C. The center is named after President John F. Kennedy and has been a hub for theater, ballet, and music performances for almost a century.

2. In 1962, the Cuban Missile Crisis reached its peak when Soviet ships carrying missiles approached the U.S. Navy quarantine line around Cuba. This event marked the closest the world ever came to nuclear war, and D.C. was the epicenter of the tense negotiations between the U.S. and Soviet Union.

3. In 2004, the Washington Nationals baseball team was officially established, bringing professional baseball back to the city after a 33-year hiatus. The team has since become a beloved fixture in D.C. sports culture.

4. In 1961, the United States Information Agency's Voice of America officially moved its headquarters to Washington D.C. The agency, which broadcasts news and information around the world, remains headquartered in D.C. to this day.

5. In 1904, the first underground train system in the United States opened in Washington D.C. The system, which is still in operation today, is known as the Washington Metro and has become an integral part of the city's transportation infrastructure.