The Tsar Bell also known as the Tsarsky Kolokol, Tsar Kolokol III, or Royal Bell, is a 6.14 metres (20.1 ft) tall, 6.6 metres (22 ft) diameter bell on display on the grounds of the Moscow Kremlin. The bell was commissioned by Empress Anna Ivanovna, niece of Peter the Great. The present bell is sometimes referred to as Kolokol III (Bell III), because it is the third generation.
The Moscow Kremlin is a historic fortified complex at the heart of Moscow, overlooking the Moskva River (to the South), Saint Basil's Cathedral and Red Square (to the East) and the Alexander Garden (to the West). It is the best known of kremlins (Russian citadels) and includes four palaces, four cathedrals and the enclosing Kremlin Wall with Kremlin towers. The complex serves as the official residence of the President of the Russian Federation.