Dante Alighieri (1265-1321) was a Florentine poet who composed the religious epic The Divine Comedy. This poem tells the story of the poet's journey through hell, pugatory and heaven. His descriptions of the punishments of sinners, in the section of the poem called the Inferno, are particularly vivid and detailed. An animated "guided tour" of Dante's inferno can be found here (uses flash).
Antinomianism is the heretical belief that faithful members of a particular religious group are the chosen people of God and thus moral and ethical codes do not apply to them. No matter how evil their actions, they will still be rewarded by God after death. In the schema of Dante's Inferno, Antinomians would be punished by being trapped in burning tombs.