1. Printing Press Arrives in Washington: On June 16, 1800, the first printing press arrived in Washington, D.C. The press was imported by Samuel Harrison Smith and was used to publish the city's first newspaper, the National Intelligencer, which went on to become one of the most influential newspapers in the country.

2. Construction of the Washington Monument Begins: On June 16, 1848, construction began on the Washington Monument, one of the most iconic landmarks in Washington, D.C. The monument was not completed until 1884 due to various construction delays, including the interruption caused by the Civil War.

3. President Theodore Roosevelt Signs the Antiquities Act: On June 16, 1906, President Theodore Roosevelt signed the Antiquities Act, which gave the president the authority to create national monuments to protect historic sites and landmarks. The act has been used to create over 150 national monuments, including the Grand Canyon and Devil's Tower.

4. The Supreme Court Rules on School Segregation: On June 16, 1958, the U.S. Supreme Court ruled in Cooper v. Aaron that states were bound by the Court's decision in Brown v. Board of Education and could not ignore it or implement laws to circumvent it. The decision was a major victory for the civil rights movement and helped to desegregate schools throughout the country.

5. The National Museum of African American History and Culture Opens: On June 16, 2016, the National Museum of African American History and Culture opened its doors to the public. The museum, located on the National Mall, features exhibits on the history of African Americans from slavery to the present day and has quickly become one of Washington, D.C.'s most popular tourist destinations.