Get off the typical tourist trail on this private walking tour. Your destination is the Rione Sanità neighborhood—once the site of a Roman–era burial ground, and now one of the city’s most bustling and distinct areas. Learn about its tumultuous history from your guide, and then continue to the Fontanelle Cemetery. This macabre, one-of-a-kind ossuary is filled with skulls and bones, and dates back centuries. Explore it—if you’re brave.