Le Palais Idéal
Ferdinand Cheval was a French postman born in 1836. He spent 33 years on building 'Le Palais Idéal', The Ideal Palace. He claims that he tripped on a stone during his daily mail round which inspired him to start working on the building in April 1879. Over 33 years he would collect stones during his mail round and bring them to the Palais Idéal. For more information, check Wikipedia. The result of his hard labour is mind blowing.