A visitor poses for photos in the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)
A visitor poses for photos in the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)
A visitor poses for photos in the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)
A visitor looks at herself in a mirror in the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)
A visitor poses for photos in the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)
A visitor poses for photos in the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)
A visitor tours the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)
A visitor tours the Upside Down House at the Museum of Illusions in Los Angeles, the United States, on Oct. 9, 2019. Located at Hollywood of Los Angeles, the Upside Down House features seven upside down rooms, attracting lots of visitors. (Xinhua/Li Ying)