Saint Basil's Cathedral sits in Moscow's Red Square near the fortfied Kremlin complex. Today, Saint Basil's, officially known as Pokrovsky Cathedral, stands as a series of red brick chapels encircling the largest, central form. Their knowledge included the technology to make steep tented roofs, which Saint Basil's has on its central chapel. It's possible Saint Basil's was the first in the region to adopt them. Basil's architects appropriated the cupola styles of the Ottoman Empire, symbolizing victory over the Kazan kingdom, which was a Tatar Turkic state.

Source: CNN November 16, 2020 12:05 UTC