Masoudieh Palace is a 19th-century Qajar mansion complex just south of Baharestan Square, built for Mass'oud Mirza Zell-e Soltan, a son of Naser al-Din Shah. Its tiled facades, courtyards, and reception buildings belong to the same aristocratic Tehran that produced Golestan Palace, but the scale is more intimate and easier to take in slowly.
The palace also has a political charge. During the Constitutional Revolution, the area around Baharestan became one of Tehran's pressure points, and Masoudieh's history is tied to that turbulent moment. Parts of the complex have been under restoration at different times, so check access before going; even when interiors are limited, the courtyard architecture makes it a worthwhile central Tehran stop.