Been there - loved it~ Milan, Italy - Duomo di Milano (Milan Cathedral) . "The cathedral church of Milan, Italy, this Gothic cathedral took nearly six centuries to complete. It is the fourth-largest cathedral in the world and the largest in Italy.
Srirangam Temple of India: There are pyramids found in South India that are used as pilgrimage sites today. One such example is Srirangam Temple, dedicated to Ranganatha Deity, and the largest Hindu temple in India.