National Historic Sites are places recognized by the government for their historical significance. These sites can include buildings, structures, or locations that have played an important role in a nation's history. They are preserved to educate the public and commemorate events or people that shaped the country. In the United States, the National Park Service manages many of these sites, which can range from battlefields to historic homes. Examples include the Independence Hall in Philadelphia and the Martin Luther King Jr. National Historical Park in Atlanta. These sites help people connect with their heritage and understand the past.