Seasoned collectors relish taking risks to find the perfect pieces that speak to their personal style, whether it’s found in the corner of a quaint antique shop or at a renowned art gallery. Here, we take a look at some of the most expensive paintings ever sold in art history, from Old World masterpieces to abstracts from 20th-century luminaries. Plus, find out which Andy Warhol painting fetched a record-setting price at Christie’s—and the controversy surrounding the world’s most expensive painting.