The Cathedral of Vasily the Blessed, aka. Saint Basil’s Cathedral, is located in Moscow’s Red Square. The building, once an active church, is now a museum and is officially known as the Cathedral of the Intercession of the Most Holy Theotokos on the Moat. It was built from between 1555–1561 on orders from Ivan the Terrible, and commemorates the capture of Kazan and Astrakhan. The cathedral was the tallest building in Moscow up until 1600, when the Ivan the Great Bell Tower was completed.