1. On June 24, 1812, the United States declared war on Great Britain. This event is known as the War of 1812 and had significant impacts on the District of Columbia, which was captured by British forces later that year.

2. The Washington Monument, an iconic landmark in the District of Columbia, was completed on June 24, 1884. The monument was built to honor the first President of the United States, George Washington.

3. June 24, 1948, marked the beginning of the Berlin Airlift, a humanitarian effort to provide food and supplies to the people of Berlin, Germany, during a Soviet blockade. The District of Columbia played a pivotal role in this effort, as planes carrying supplies landed at airports in the city.

4. On June 24, 1973, the Upshur Street Art Fair was held in the District of Columbia. This event showcased the diverse cultural offerings of the city and showcased the work of local artists from various backgrounds.

5. June 24, 2016, saw the opening of the Smithsonian National Museum of African American History and Culture in the District of Columbia. The museum explores the history and contributions of African Americans to the United States and has quickly become a popular destination for locals and tourists alike.