The Kalan Mosque is an Islamic religious complex located around the Kalan Lighthouse in Bukhara. It is one of the oldest buildings in Uzbekistan. Its construction dates back to the year 713 AD. Historians believe that the mosque was built in the past as a temple for the worship of fire, but it was destroyed with the Islamic invasion and a mosque was built. status. The mosque is distinguished by its luxurious architecture, as it is covered with beautiful mosaics, luxurious white marble, and emerald-covered domes.