National museums are institutions that preserve and display a country's cultural heritage, history, and art. They often house collections of artifacts, artworks, and historical items that represent the nation's identity and achievements. These museums serve as educational resources, providing visitors with insights into the past and present of their country. Many national museums also engage in research and conservation efforts to protect their collections. They may host temporary exhibitions, educational programs, and community events to promote public interest in history, art, and science. Examples of national museums include the Smithsonian Institution in the United States and the British Museum in the United Kingdom.