Apadana: An apādana is a type of palace building found in Persepolis and other Persian cities. They were used for official ceremonies and receptions.
Achaemenid Dynasty: The Achaemenid Dynasty was the ruling dynasty of Persia during the time of Persepolis. It was founded by Cyrus the Great and lasted until Alexander the Great conquered Persia.
Relief Sculpture: Relief sculptures are artworks that are carved or molded onto a flat surface but still have some depth. Many relief sculptures can be found on the walls of Persepolis, depicting various scenes and figures.