What do collecting art and banking have in common? More than you might think. They bought their first Rubens in 1643. And they’ve been collecting masterpieces ever since. What other proof do you need of a family’s long-standing passion for art? The Princes of Liechtenstein reign over the Principality of Liechtenstein, a semi-constitutional monarchy and microstate situated in the Alps. The family have been art lovers and collectors for more than 400 years, and over...