The National Science Museum is a scientific culture facility which studies and exhibits various scientific materials. At its center is the Astronomical Hall, which is the largest dome in Korea. From here you can vividly see the phenomenon of the celestial sphere and the human development of space. It also has the only world-class space theater in Korea. The 242 seats are available on a first-come first-serve basis. It can re-create the appearance of a night sky, the highlight being the view of the starlight at the planetarium. The Astrovision is also a special visual device, giving a magnificent and realistic view of space development.There are exhibits featuring about 4000 items based on nature and natural science at the Permanent Exhibit Hall. There are also exhibit halls featuring Korean nature, weapons, and folk musical instruments. You can see the stages of collecting energy from nature, and its use in transportation. Outside the Hall is Cheomseongdae, a weather evaluating machine from the Goryeo period; models of plant-eating dinosaurs; and a steam engine. The exhibits help to easily understand the theories of science, and the wonders of nature. The museum has a movie theater. Science movies and other excellent movies are shown at 11am and 2pm every day, and the seating can accommodate 776 people.