Mathematician Gauss left behind a trophy case of mathematical achievements to highlight on his tombstone, but above all he wanted a regular heptadecagon etched on it
KMSP sits right in the middle of a county park, and, in fact, one set of guy wires that hold it aloft terminate on a jetty in the middle of a marshy lake.
https://www.scientificamerican.com/article/why-this-great-mathematician-wanted-a-heptadecagon-on-his-tombstone/