
A visitor poses for photos inside the Upside Down Museum in Pasay City, the Philippines, April 1, 2017. The Upside Down Museum showcases various interactive displays that allow visitors to play around with the illusions. (Xinhua/Rouelle Umali)

A visitor poses for photos inside the Upside Down Museum in Pasay City, the Philippines, April 1, 2017. The Upside Down Museum showcases various interactive displays that allow visitors to play around with the illusions. (Xinhua/Rouelle Umali)