The identified part represents an open string!:)
Answer:
playhouse, auditorium, amphitheater, hippodrome, and a coliseum.
Explanation:
They are all different variations of a theater.
Prehistoric art covers Europe, the Mediterrean, and Western Asia from the Paleolithic period (Old Stone Age) about 30,000 years ago to approximately 2500 B.C.E. The most comprehensive representation of Paleolithic art ever published and a radical (and controversial) new way of interpreting it.
The Hagia Sophia was a Church Cathedral.
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