Ferdinand Cheval was a French postman who used to collect unusual stones while delivering mail. Starting from 1879, for 33 years, he’d built a castle using those stones. When the work was finished in 1912, the postman asked to be buried inside. Because that was illegal in France, he spent 8 more years building a mausoleum for himself in the local cemetery.

This talented man died in 1924, one year after his mausoleum was built. By the way, just before his death, Cheval received recognition from André Breton and Pablo Picasso. Later, both of his masterpieces were recognized as monuments of cultural heritage.