It’s hard to believe but this building was constructed by one person — a postman named Ferdinand Cheval, who had neither an architecture degree, nor money for construction materials. He had been collecting sideroad stones from 1879 until 1912 (33 years in total) while he was delivering mail.

It took him years to construct this bizarre building, where it’s impossible to point out just one architectural style. Nevertheless, after many years, Ferdinand even got recognition from Pablo Picasso himself.