Qajar Palace
District 7, Iran
The Qajar Palace (Qasr-e Qajar) was the name of a Qajar era palace in Tehran, Iran. It was demolished in the 1920s to be replaced by the Qasr prison. The only remaining structure of the palace complex is a small pavilion. It had four watchtowers on its corners and did not feature windows on the outside, making it look more like a barracks than a palace.
Palace data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).