An exhibit focusing on the church designs of noted Spanish architect Santiago Calatrava went on display at the Vatican this week, with a large model, seen here, — shown to the public for the first time — of the soon-to-be rebuilt St. Nicholas Greek Orthodox Church in New York, which was destroyed in the 9/11 attacks. Photo courtesy Santiago Calatrava

An exhibit focusing on the church designs of noted Spanish architect Santiago Calatrava went on display at the Vatican this week, with a large model, seen here, — shown to the public for the first time — of the soon-to-be rebuilt St. Nicholas Greek Orthodox Church in New York, which was destroyed in the 9/11 attacks. Photo courtesy Santiago Calatrava