Dante places Nicholas III in the third circle of Hell, reserved for the gluttonous. However, he makes it clear that Nicholas's sin is not gluttony in the traditional sense, but rather his lust for power and wealth, which manifested in the corrupt practice of simony.
Here's how Dante depicts Nicholas's sin:
* He is buried upside down in a pit, a clear symbol of his reversed priorities.
* He is chained with other simoniacal popes like Boniface VIII and Clement V.
* He screams in frustration, lamenting his fate and the fact that he is buried under the earth he thought he owned.
Through this depiction, Dante condemns the corruption of the Church, specifically the practice of simony which he saw as undermining the spiritual integrity of the institution.