In the historic center of Trapani, just behind the busy pedestrian thoroughfare of Via Giuseppe Garibaldi, a multitude of ceramic faces adorn the facade of a particular building. Another glance reveals a group of colorful sculptures created from a hodgepodge of diverse objects. Welcome to the world of Mario Cassisa, a Sicilian-American outsider artist. The studio where he lived and worked for decades is now a museum that overflows with art and memorabilia from his extensive world travels. Thin, bronze sculptures draped with strange objects tower over rows of elaborate…