Arab archery
Muhammad was quite good with a bow, and appreciated the benefits of archery in sports and warfare. A recurved bow made of bamboo, and ascribed to Muhammad, is held in the Sacred Relics (Topkapı Palace) in the Chamber of the Sacred Relics in the Topkapi Museum in Istanbul.
Ioannina Castle
The main surviving part of Ali's palace is the so-called "Treasury" (Θησαυροφυλάκιο) to the north, a square building of unidentified use. A domed space adjacent to it was later converted into the small church of the Holy Unmercenaries (Άγιοι Ανάργυροι). The Treasury was restored in 1989–90 and houses an exhibition on the history and methods of silversmithing in Ioannina and its wider area, for which the region was famous in Ottoman times. Other surviving or excavated structures are the kitchens, dating to the early 19th century, located in the northwestern part of the citadel, which now serve as a refectory; the gunpowder store to the northeast of the Fethiye Mosque, which today serves as an educational space, with a ruined building of unknown purpose between it and the kitchens, as well as the ruined base of another large Byzantine-era circular tower; a large two-storey building northeast of the Treasury, possibly a barracks or an unidentified part of the palace, which survives only in half its original length, and now serves as a cultural and exhibition space; and a small bath complex to the north.