Shams-ol-Emareh — the "Palace of the Sun" or "Palace of the Brilliant" — is the ornate multi-storey tower that stands on the eastern facade of the Golestan Palace complex, visible from outside the walls as a distinctive tiled tower. It was built by Nasser al-Din Shah in 1867 as the first multi-storey building in Tehran, combining European architectural influences (particularly in the use of iron structural elements) with Iranian tile work and decorative traditions.
The building is visually remarkable from outside — its six storeys of ceramic tile in blue and yellow, flanked by two smaller towers, stand out against the mostly low-rise surroundings. The interior staircase and the view from the upper floors are accessible as part of the Golestan Palace ticket. The clock on the facade is one of the first European-style clocks installed on a public building in Iran.