The National Museum of Korea is the flagship museum of Korean history and art in South Korea and is the cultural organization that represents Korea. Since its establishment in 1945, the museum has been committed to various studies and research activities in the fields of archaeology, history, and art, continuously developing a variety of exhibitions and education programs. In October 2005, the museum opened in a new building in Yongsan Family Park in Seoul, South Korea. The museum contains over 220,000 pieces in its collection with about 13,000 pieces on display at one time. It displays relics and artifacts throughout six permanent exhibition galleries such as Archaeological Gallery, Historical Gallery, Fine Arts Gallery I, Donation Gallery, Fine Arts Gallery II, and Asian Art Gallery. It is the sixth largest museum in the world in terms of floor space, now covering a total of 137,201 square metres (1,480,000 sq ft). In order to protect the artefacts inside the museum, the main building was built to withstand a magnitude 6.0 Richter Scale earthquake. The display cases are equipped with shock-absorbent platforms. There is also an imported natural lighting system which utilizes sunlight instead of artificial lights and a specially-designed air-conditioning system. The museum is also made from fire-resistant materials. It also has special exhibition halls, education facilities, a children's museum, huge outdoor exhibition areas, restaurants, cafes, shops and other amenities.