Visitors may gaze in awe at the Taj Mahal, but only for three hours, according to a new rule. LUDOVIC MARIN/AFP/Getty Images hide caption

Red Velvet performs at K-Pop Night Out during the 2017 SXSW Conference in Austin, Texas. This weekend the group will perform in Pyongyang. Michael Loccisano/Getty Images for SXSW hide caption

Zhuang Liehong with his wife, Little Yan, and one of his sons, Kaizhi, in 2013 — a year before immigrating to the United States. Courtesy of Zhuang Liehong hide caption

Nandar was one of the organizers — and participants — in the staging of 'The Vagina Monologues." Libby Hogan for NPR hide caption

Nobel Peace Prize winner Malala Yousafzai speaks with students at Denver South High School, in October 2016. RJ Sangosti/Denver Post via Getty Images hide caption

Scientists look at the screen showing the Shenzhou X manned spacecraft docking with the orbiting Tiangong-1 space module at Beijing Aerospace Control Center on June 13, 2013, in Beijing. VCG/VCG via Getty Images hide caption

North Korean leader Kim Jong Un and Chinese President Xi Jinping shake hands in Beijing, in this photo provided by China's Xinhua News Agency in Beijing. Kim was making his first known trip to a foreign country since he took power in 2011. Ju Peng/AP hide caption