How to steal a European painting

Europe has an especially high concentration of world-class art collections, many of which are housed in modest institutions. The art in Zurich was housed in a 19th-century villa, as opposed to a large-scale museum with a complicated entrance. Further, most security personnel in European museums aren't armed, mostly due to a culture of openness and trust, but also for reasons of expense and liability—you wouldn't want bullets flying around an enclosed space with lots of frightened tourists and precious objets d'art. While many galleries have alarms, guards, and other staff to prevent off-hour thefts, they don't always take precautions to avoid the most obvious scenario: armed criminals walking right through the front door