The Treasury of National Jewels Museum: the underground treasure vault of the Central Bank of Iran. It houses the most precious national treasures of the Iranian royal families over the centuries, including the crowns of the Qajar Dynasty and the Pahlavi Dynasty. The Pahlavi crown is adorned with 3,380 diamonds weighing over 2,000 carats and 368 pearls. In the museum, there is a 20-kilogram intricately carved golden plate with texts made of small diamonds, presented by the Jewish community during the coronation of Reza Shah. Also on display is a 37-kilogram pure gold globe encrusted with over 40,000 rubies and sapphires, with diamonds marking the locations of countries such as Iran, China, the United Kingdom, and Indonesia. Notably, there is the renowned “Peacock Throne,” symbolizing Iranian royalty with its elaborate jewel decorations. Located on Ferdowsi Street, the museum was established in 1937, with the current exhibition hall constructed in 1956, showcasing numerous jewels, ancient ornaments, weapons, and daily utensils in over 40 display cases. The arrangement of displays in the cabinets is periodically changed, with highlights including “Daryā-ye Nūr” (Sea of Light), a 182-carat pink diamond engraved with the name of Fat’h Ali Shah, one of the world’s largest cut diamonds; the famous Kiani Crown, weighing 781 carats and belonging to Nader Shah; and an exceptional jewel-encrusted globe crafted from pure gold with a total of 51,366 precious gemstones. Address: Bank Melli Iran Building, Ferdowsi Street. Visiting Hours: 14:00–16:30.