Presidential Mansion
Athens Municipality, Greece · built 1897
The Presidential Mansion (Proedrikó Mégaro) in Athens, Greece, is the official residence of the president of the Hellenic Republic. It served previously as the Royal Palace (often known as the New Royal Palace, Néa Anáktora), until the abolition of the monarchy by the 1974 referendum.
Palace data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).