The Liechtenstein Museum in Vienna recently reopened. “The collection is one of the largest and most valuable private collections in the world, and belongs to the royal family of Liechtenstein, the tiny country wedged between Austria and Switzerland. The museum closed on the eve of World War II in 1938 and since then the artwork has remained hidden behind castle walls in Liechtenstein. Until its closure the museum was regarded as a must-see among Vienna’s cultural wealth.”