Katora, west of Achalpur, is the only notable surviving Imad Shahi monument. Bidar The main architectural activities for the Barid Shahi rulers were building garden tombs. The tomb of Ali Barid Shah (1577) is the most notable monument in Bidar. The tomb consists of a lofty domed chamber, open on four sides, located in the middle of a Persian four-square garden. The Rangin Mahal in Bidar, built during the reign of Ali Barid Shah, is a complete and exquisitely decorated courtly structure. Other important monuments in Bidar from this period are the tomb of Qasim II and the Kali Masjid. An important class of metalwork known as Bidriware originated in Bidar. This metalwork consists of a black metal, usually a zinc alloy, inlaid with intricate designs in silver, brass, and sometimes copper. Bijapur The Adil Shahi rulers contributed greatly to architecture, art, literature, and music, as Bijapur developed into a cosmopolitan city under their rule and attracted many scholars, artists, musicians, and Sufi saints from Rome, Iran, Iraq, Turkey, and Turkestan. The Adil Shahi kings were known for their tolerance towards Hindus and non-interference in their religious matters. They employed Hindus to high posts, especially as officers overseeing accounts and administration, whose documents were maintained in Marathi. Amongst the major architectural works in the Bijapur Sultanate, one of the earliest is the unfinished Jami Masjid, which was begun by Ali Adil Shah I in 1576. It has an arcaded prayer hall, with fine aisles, and has an impressive dome supported by massive piers. One of the most impressive monuments built during the reign of Ibrahim II was the Ibrahim Rouza which was originally planned as a tomb for queen Taj Sultana, but was later converted into the tomb for Ibrahim Adil Shah II and his family. This complex, completed in 1626, consists of a paired tomb and mosque. Ibrahim II also planned to construct a new twin city to Bijapur, Nauraspur, whose construction began in 1599 but was never completed. The greatest monument in Bijapur is the Gol Gumbaz, the mausoleum of Muhammad Adil Shah, which was completed in 1656, and whose hemispherical dome measures across. The other important architectural works from this period are the Chini Mahal, the Jal Mandir, the Sat Manzil, the Gagan Mahal, the Anand Mahal, and the Asar Mahal (1646), all in Bijapur, as well as the Kummatgi ( from Bijapur), the Panhala Fort (