Saint Basil's Cathedral or also known as 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 Vasily the Blessed (Russian: Собор Василия Блаженного), anglicized as Saint Basil's Cathedral. Source: Wikipedia
Funny. The game 'Tetris' comes to mind. Heh.