The 216-ton Russian Tsar Bell (also known as the Tsar Kolokol III) on display on the grounds of the Moscow Kremlin is the heaviest bell known to exist in the world today. However, a very large piece broke off from the Tsar Bell during a fire which engulfed the tower the bell was intended to be hung in, so this irreparably damaged bell has never been suspended or rung. The Tsar Bell can not be considered as the heaviest functioning bell in the world due to its inability to serve as a percussion instrument. Rather, it may be considered to be the largest bell, or at least the largest bell-shaped sculpture in the world.

Where is the largest bell in the world? Let's have some stream of consciousness first.
The relevant sentence in the passage is: The 216-ton Russian Tsar Bell (also known as the Tsar Kolokol III) on display on the grounds of the Moscow Kremlin is the heaviest bell known to exist in the world today. So, the answer is on display on the grounds of the Moscow Kremlin.