Seodamun Museum of Natural History is about natural history. The first thing of natural history is the Big Bang that in universe that happened 15billion years ago. Universe was smaller than a atom before Big Bang. 4.6billion years ago, the Mercury, Venus, Earth, Mars were born. The first Earth was a star. Magma surrouned core. This magma is mantle. Then, crust, ocean, the super continent, Pangea was formed. At this time, it was Precambrian Era. The first creature was micro- cyanobacteria. It made oxygen by photosyntheis. At this time, there was simple animals. At Paleozoic Era, bacterias developed to fish, to amphibian, to reptile. At Mesozoic Era, it developed to mammles. After Cenozoic Era, dinosaurs extincted, and the first men, A.Anamensis was on the Earth. Next was A.Afarensis, then A.Africanus and A.Itiopithecus. A.Africanus developed to H.Rudolfensis and H.Habilis. A.Itiopithecus developed to A.Robustus and A.Boisei. H.Habilis developed to H.Erectus, then H.Heidelbergensis, then H.Sapiens and H.Neanderthalensis. H.Sapiens developed to Cro-Magnons. The natural is great.