The Burren, a great rocky expanse in Ireland’s County Clare, is one of the world’s truly unique places. Its ancient, awe inspiring stone structures hold secrets from the past that may never be unraveled. Closer to home, The Burren, Irish Pub and Restaurant in Somerville’s Davis Square, is now one of Boston’s truly unique places. It captures the mythical nature of its namesake with a rich old world feel that takes hold and slowly pulls you toward another time.