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All the Netherlands Leiden Willebrord Snellius' Grave

Willebrord Snellius' Grave

One of the great math minds of the 17th century is underfoot in this 900 year old Dutch church.

Leiden, Netherlands

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CoolCrab
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Snel’s Grave - he died in 1626   coolcrab (Atlas Obscura User)
Snel’s Grave - he died in 1626   coolcrab (Atlas Obscura User)
Snel is buried with his wife Maria   coolcrab (Atlas Obscura User)
Plaque marking the site was added later   coolcrab (Atlas Obscura User)
The plaque and gravestone are in a modest corner of the church   coolcrab (Atlas Obscura User)
Pieterskerk, the oldest church in Leiden, used as an event and community space since the 1970s   Helena
a plaque elsewhere in the city, showing the math   jschrlmr / Atlas Obscura User
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About

There is a church in Leiden called Pieterskerk, or the Church of St. Peter. It’s a 900-year-old Gothic beauty, the oldest church in this small city half way between Amsterdam and The Hague. It’s also known as the Church of the Pilgrim Fathers, most famous to Americans as the Dutch refuge where the Mayflower separatists briefly hung out after leaving England, but before sailing to Massachusetts.

The church has been deconsecrated as a religious space since the early 1970s, so you can’t attend services there any more, Calvinist or otherwise. But you can visit the final resting place of one of the world’s great mathematicians, an All-Star named Willebrord Snellius.

Willebrord Snel van Royen is buried under the floor at Pieterskerk, his spot marked by a simple flat stone and small plaque. Snell, as he’s known to physics and astronomy students everywhere, is the brains behind the law of refraction, one of the fundamental laws of physics.

That alone would have secured his math chops, but his reach goes much further. Of his many milestones, he’s also credited with basically inventing triangulation as we know it, managing to figure out the circumference of the Earth to a remarkably accurate degree for the time.

In the Netherlands he is remember with particular fondness and pride for drafting the first accurate map of the country. He achieved it with his new brand of triangulation, climbing up a series of church towers to measure their distances with a giant quadrant. The map was so accurate—and therefor valuable to the Dutch military—that it was kept secret and unpublished until years later.

For all who aren’t familiar with Snell’s Law of refraction or may have forgotten it, there will be no pop quiz. Here you go: 

 Got it? Good.

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Gravestones Mathematics Science Memorials Physics Graves

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Pieterskerk hasn't been used as a church for many years, but has been a public and community space for everything from concerts to trade shows to weddings to art fairs. Spaces are available for rent, and there is a cafe and outdoor patio. The church, including the cafe, is open every day from 11am to 6pm, but is occasionally closed to the public for certain events. Check the website at right for full schedule.

Community Contributors

Added By

CoolCrab

Edited By

jschrlmr

  • jschrlmr

Published

September 21, 2016

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  • https://en.wikipedia.org/wiki/Willebrord_Snellius
  • https://nl.wikipedia.org/wiki/Driehoeksmeting#Rijksdriehoeksmeting
  • https://en.wikipedia.org/wiki/Pieterskerk,_Leiden
  • https://en.wikipedia.org/wiki/Snell%27s_law
Willebrord Snellius' Grave
Pieterskerkhof 1a
Leiden
Netherlands
52.157638, 4.48786
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