7 Weird Things People Believed About the World in Medieval Europe

Giant snails, devils, and werewolves, oh my!

Manuscript illustration of a group of people on green field watching boats in ocean

Norway (Ululand) (detail), from Livre des merveilles du monde (Book of the Marvels of the World), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 33

By Erin Migdol

Jun 25, 2024

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If you were an average person living in Europe in the 15th century, you probably weren’t very well traveled—meaning much of the world (even places within Europe) may have felt very mysterious to you.

What kinds of animals roamed the land, what did the land even look like, and what were the people like? To get the answers to these questions, you might rely on a mixture of stories from people who’d visited (or claimed to have visited) those lands.

Enter the Book of the Marvels of the World, a 15th-century illustrated manuscript written in France by an unknown author. The book shares descriptions and images of people, traditions, animals, and natural phenomena from locales around the world, as close as France itself and as far away as Egypt, China, and Africa. Little is known about the book’s patrons and early readers, but evidence suggests they were wealthy, educated members of the elite class who perhaps were engaged in travel and commerce or consumers of luxury international goods.

Four copies and one set of fragments survive today, and one copy (although missing some text and images) was recently acquired by Getty. The book is the focus of the new Getty exhibition The Book of Marvels: Wonder and Fear in the Middle Ages.

While some creatures and customs described in the book are based in reality, most are not. The book’s author crafted the stories from a combination of folklore, ancient sources, dubious and exaggerated firsthand accounts, and mythical tales of lands that do not exist. Ultimately, the stories recounted in the book reflect the era’s biases and prejudices, revealing how French Christians saw the world and spreading stereotypes they believed. The exhibition title references “wonder and fear” because the experience of wonder and fear are often two sides of the same coin.

“Just as space-alien and horror movies entertain modern audiences because they offer a thrilling yet vicarious experience of wonder and fear, so did the text and images of the Marvels manuscripts for their intended audience in the Middle Ages,” says exhibition co-curator Elizabeth Morrison, Getty senior curator of manuscripts.

Kelin Michael, former graduate intern in the department and exhibition co-curator, adds, “But it is important to keep in mind that in the Book of Marvels, the fascinating but often fictitious descriptions evoked wonder and fear by reinforcing a sense of civilized superiority in their audiences.”

So when we look back at the Book of Marvels of the World today, many of the claims seem pretty wacky, or even shocking! Read on for a taste of some of the truly outlandish things described in the book.

1. The opening to purgatory is found in… Ireland?

Manuscript drawing of soldiers with spears and religious people looking at a hill with a hole in it

Ireland (Hibernia) (detail), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 4

See that hole in the side of the hill? That’s the opening to purgatory, apparently found in Ireland. (According to medieval Christian belief, purgatory was a temporary place for purification/punishment after death to purge a soul before its movement to heaven).

The Book of Marvels elaborates that in Ireland there is “a very large opening like the mouth of a very deep well. And… it was revealed to the bishop Saint Patrick that this was the entrance to Purgatory and that all Christian men who would enter therein willingly and patiently endure all the dangers there would never have another purgatory.”

2. Sri Lanka: Land of giant snails

manuscript illustration of giant snails, with people and animals running after tham and two people sitting in a shell

Sri Lanka (Trapponee) (detail), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 32

Readers of the Book of Marvels would have come away with some decidedly odd impressions of Sri Lanka—namely, that the land is inhabited by giant fast-moving snails big enough to hunt. And their shells are roomy enough to live inside!

The text recounts that Sri Lanka (called Traponee) has “the biggest snails that exist in the world, and they move so quickly that it is a marvel, and the men of the country hunt and chase them as we over here hunt wild animals. And the people of the region live on their flesh… And the shells are so big that the men and women of the country live inside them, and they have no other houses or habitations.”

3. Spain, where horses become pregnant from the wind

manuscript illustration a lake surrounded by mountains with devils in it

Spain (detail), from Livre des merveilles du monde (Book of the Marvels of the World), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 1v

The air apparently has a lot more power in Spain than you might think. The pair of horses on the left side of the image represent the strange claim that in Spain, horses become pregnant through the wind.

“The mares, during the season when the soft and gentle wind Favonius [Zephyrus] is blowing above them, even though they be without the company of their stallions that we call horses and are grazing on the grass of the fields or the mountains all alone, when the month of May comes, they become pregnant by breathing in this wind, without being covered by their stallions.”

4. The lake in Spain where the devil lives

manuscript illustration a lake surrounded by mountains with devils in it

Spain (detail), from Livre des merveilles du monde (Book of the Marvels of the World), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 1v

But wait, there are more marvelous creatures to be found in Spain! This claim sounds more like a local legend: a deep lake at the top of a mountain in Catalonia—“so deep that no man has ever found the bottom, and its water is hideously black and very frightening to behold”—is where the devils of hell have made their home.

“And if it happens that any man throws a stone into this lake, then the devils are enraged and, to avenge their injury, they stir up great rumblings in the form of thunder, lightning, and storms.”

5. The deserts of China are filled with serpents and dragons

Manuscript illustration of mountains, trees, a ship in the distance, and dragons and serpents

China (Seres) (detail), from Livre des merveilles du monde (Book of the Marvels of the World), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 30v

The Book of Marvels presents the deserts of China as remarkably vast, noting that they are “extremely far” from any human habitation and very difficult to cross. One reason: they are filled with beasts like serpents and dragons (see these fantastical creatures on the left side of the image above).

“The deserts there are so great and so terrible and so full of ravenous, wild, venomous beasts like tigers, wolves, serpents, and dragons, that no one would be able to go there in a simple way without being killed.”

6. In Italy, some people walk through fire

manuscript image of people putting someone in a brick bin with devils, and people standing in flames

Italy (detail), from Livre des merveilles du monde (Book of the Marvels of the World), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 14

Walking through fire was, apparently, no big deal for a group of people in Italy called “Hirpes” in the Book of Marvels.

They were “not among the most noble,” the book notes, but still “had such a power within themselves that they walked and could go and come through a great burning fire without feeling it or having any burns or discomfort at all.”

7. Scythia, where the werewolves roam

manuscript drawing of people looking at a corpse on a table, a group of people attacking another person, and a woman on horseback

Scythia (detail), from Livre des merveilles du monde (Book of the Marvels of the World), about 1460–1465, Master of the Geneva Boccaccio. Colored washes, gold, and ink, 5 1/2 × 3 1/8 in. Getty Museum, Ms. 124 (2022.15), fol. 26

The book devotes a section to Scythia, a region north of the Black Sea where a civilization flourished from around 900 to 200 BCE. According to the Book of Marvels, some living among this vast territory were in fact werewolves (check out the top left corner of the grisly image above).

“There is a province called Neutria through which flows the river Borriscenes, and on the banks of this river live people who are of such a nature that on certain days of the summertime, when they pass through the waters of this river, they are transfigured and become wolves and live only on raw flesh.”

While these claims of giant snails, werewolves, and people who are immune to fire may seem far-fetched, consider how we still “marvel” at awe-inspiring, fascinating, or “unexplainable” things in the world today. What does that say about us?

“We still use marvels as a way of structuring experience, from seeing the Eiffel Tower for the first time in Paris, to tales of the Loch Ness Monster,” Morrison says. “We all need wonder in our lives, so it is instructive to think of the marvels we see or imagine today as one way to understand the modern world.”

Visit The Book of Marvels: Wonder and Fear in the Middle Ages at the Getty Center through August 25, 2024. A complementary show, The Book of Marvels: Imagining the Medieval World, will take place at The Morgan Library and Museum from January 24 to May 25, 2025. To take a deep dive into the Book of Marvels and the "oddities, curiosities, and wonders" it describes, check out The Book of Marvels: A Medieval Guide to the Globe, published by Getty.

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