In the late Middle Ages, authors of fiction, historical texts, and travel narratives discussed issues related to the places and spaces of marvels. Writers debated whether local, western occurrences could be as wondrous — and thus worthy of being recorded in writing — as foreign, eastern phenomena. This article explores how Boccaccio's engagement with Dante was intertwined with evolving views of the marvelous. It proposes that Boccaccio, following Dante, likened his writings to natural marvels to defend the status of literature, a mode of discourse sometimes considered unnatural or fraudulent. In addition, this research examines how Boccaccio drew on marvels to highlight differences between the properties and ethics of Dante's Comedy and these aspects of his Decameron. In addressing these topics, Boccaccio was inspired by late medieval Latin historians, who foregrounded the novelty of their texts by self-consciously writing about western marvels. In the Decameron, Boccaccio recalled ideas about local marvels to champion the dignity of his erotic, mundane stories in comparison to Dante's otherworldly, divine poem. Boccaccio thus also reminded readers not only to wonder about future, eternal matters, but to cherish the experiences of this our present life.