1. On September 7, 1814, during the War of 1812, British troops under the command of Major General Robert Ross landed at North Point, Maryland, with the intention of attacking Baltimore. This event led to the Battle of North Point, which would eventually culminate in the famous Battle of Baltimore and the creation of the Star-Spangled Banner.

2. September 7, 1863 marked the beginning of a three-day battle that would become one of the bloodiest fought on American soil during the Civil War. The Battle of Catoctin Summit, also known as the Battle of Braddock Heights, took place in Frederick County, Maryland and resulted in the deaths of over 800 soldiers.

3. The first successful manned flight of a hot air balloon in America took place on September 7, 1784, near Baltimore. The balloon, named "Charlière," was piloted by Frenchman Jean-Pierre Blanchard and American physician John Jeffries as they ascended to a height of about 8,000 feet.

4. On September 7, 1965, the Orioles' Frank Robinson became the first player in major league baseball history to hit a home run in every ballpark in the league. This historic feat came during a game against the Angels in Anaheim, California.

5. September 7, 1978 marked the opening of the Baltimore Convention Center, a landmark building in the city's downtown district. The center has hosted countless events and conventions over the years, including the annual Baltimore Comic-Con and the Maryland Film Festival.