Liu Dalin and Hu Hongxia's museum was so hot it got booted out of Shanghai in 2004. Not to be discouraged, the Chinese sexologists took their 4,000-piece collection of ancient erotica and reopened in nearby Wujiang, Jiangsu province. Inside the China Sex Museum, you'll find an eye-opening exhibition including a Qing dynasty brothel "menu," a silk donut-shaped masturbation pillow and a Ming-style wooden chair built for particularly acrobatic sexual positions. You won't see that in the Forbidden City. Open seven days a week. Admission: $3.
— By Ling Woo Liu