Based on cultural and historical impact, along with its unique location, the Odeon of Herodes makes the top of the list. The odeon was built in 161 A.D. by Herodes Atticus in memory of his wife, and sits in Athenian Acropolis. Herodes was the richest Athenian at the time. Though he was Greek but was a privileged Roman citizen and was highly popular due this vast knowledge. He married a beautiful Roman woman "Rigilla" who died young. Thus the Odeon (of Rigilla previously) was constructed in her memory which also happened to function as a theater.