Traveling to the United States, I took the subway to visit the Smithsonian Museum area on weekends, one of which is one. It is the National Indian Museum, one of the largest collections of American Indian art and culture items in the world, including jewelry, pottery, textiles, paintings, statues and more. The museum has several themes, namely "our world", "our people" and "our life". It is not even in shape compared to other museums in the National Mall area of Washington, and its architectural exterior is made of limestone into a curved facade, representing the unique landscape of the desert canyon in the southwest of the United States after millions of years of wind and rain erosion. Outside the museum, there are more than 150 American specialties, flowers, very beautiful, of course, this one has to do with the season. These plants from water lilies to corn stalks, many varieties, interested people can also spend a little time here. This natural landscape also comes to the museum's interior, with plants, rocks decorated everywhere, and a circular performance venue with a wedge-shaped skylight above the head, symbolizing the connection to the sky, with four stone fan-faced sections arranged in the middle. The museum is carefully designed by people, and people interested in decoration and design can also come here. Any museum in this area needs to pass security to go to the exhibition hall. From the gate, you can see the security area. There are security inspection bags. There are security guards to sweep the body with metal detectors. Soon, you can enter after completion. Its security procedures are the same as other museums.