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Over 7,500 people have now made a contribution to Mothe-Chandeniers chateau in Les Trois-Moutiers, France, and have raised more than €612,078 so far.
Around €500,000 (£440,000) has gone towards purchasing the building, while the rest will be used for its future restoration and upkeep.
For €50, each contributor owns one 'part' or share in the castle. For those contributing €100, they own two shares, and so on.
On the castle's fundraising page , a note reads: "It's done, it's historic!
"Château de la Mothe-Chandeniers now belongs to thousands of Internet users.
"Through this collective purchase, we believe in the preservation and development of the heritage of the future and [have] proved that the civic strength is always the greatest.
"Thanks to the thousands of anonymous people!
"Let's go on!"
Now that the castle has been purchased, each contributor will be able to invest €1 for every €50 contributing to the sale price to become an official future owner of the company that will promote the castle as a historic vistors' site, collecting any profits made from turning the historical building into a tourist destination.