Qatar's 30-Year-Old Culture Queen Is the Art World's Biggest Player

The biggest fish in the art acquisition pond is Sheika al Mayassa bint Hamad bin Khalifa al-Thani, the 30-year-old chairwoman of the Qatar Museums Authority and a sister to Qatar’s new emir (and daughter of the former). Her recent buys include pieces by Rothko, Damien Hirst, and Paul Cézanne’s Card Players — for…