Char Minor (four minarets), Bukhara, Uzbekistan :
Built by by Khalif Niazkul, in 1807 AD, it is a historic gatehouse for a now-destroyed madrasa Madrasah of Khalif Niyaz-kul, in the historic city of Bukhara. It is located in a lane northeast of the Lyab-i Hauz complex, and is protected as a cultural heritage monument.