1. In 1868, the Arlington National Cemetery was officially established on May 30. Originally, the cemetery was the home of Confederate General Robert E. Lee, but it was seized by the Union Army during the Civil War. Over the years, the cemetery has become the final resting place of thousands of military veterans, including many famous figures such as President John F. Kennedy.

2. On May 30, 1922, the Lincoln Memorial was dedicated in Washington, D.C. The massive statue of Lincoln was placed inside the monument, which is now one of the most iconic landmarks in the city. Today, the monument attracts millions of visitors each year who come to pay their respects to the 16th president.

3. In 1937, the Memorial Day Massacre occurred in Chicago. Riot police fired into a crowd of striking workers, killing ten people and injuring many more. The tragedy became a turning point in labor relations and led to the establishment of many workplace safety laws and regulations.

4. On May 30, 1971, the Kennedy Center for the Performing Arts was officially opened in Washington, D.C. The center is a hub for music, theater, dance, and other performing arts, and hosts hundreds of events each year. The center was named in honor of President John F. Kennedy, who had been a strong advocate for the arts during his presidency.

5. In 1990, the Vietnam Veterans Memorial Fund announced the creation of the Vietnam Women's Memorial, which would honor the 11,000 women who had served in Vietnam. The memorial was dedicated on November 11, 1993, and is located near the Vietnam Veterans Memorial Wall in Washington, D.C. It is the first national memorial dedicated to women who served in the military.