This answer on the History of Science & Maths SE says that Dante's Purgatorio contains a lot of what would now be considered "worldbuilding" which seems fairly advanced for the time: apparently, Dante knew that the antipode of Jerusalem would see the sun moving anticlockwise and in the northern p...

It is the day of the Carnival, and Belvile and Willmore have just met a pair of gypsies (who are actually regular women named Florinda and Hellena in disguise). Willmore, who is an unapologetic sexual libertine, is captivated by Hellena's wit and cannot stop thinking about her. Falling in love is...