The Cathedral of the Protection of Most Holy Theotokos on the Moat (Russian: Собор Покрова пресвятой Богородицы, что на Рву) or Pokrovsky Cathedral (Russian: Покровский собор) are official names for a Russian Orthodox church in Red Square in Moscow. The church is also called the Cathedral of St. Vasily the Blessed (Russian: Собор Василия Блаженного), anglicized as Saint Basil’s Cathedral. It was built from 1555–61 on orders from Ivan the Terrible and commemorates the capture of Kazan and Astrakhan.