Not sure this is real but it’s the closest I could find to the origin of the image dated April 2nd, 2021.

https://www.tumblr.com/transperceneige/647391886818050048/just-want-to-point-out-that-we-found-this-door-at

in much more interesting news, today at work I got to explore an abandoned 500-year-old castle, seized by the state because of the owner’s massive tax evasion

So yes the place is 500yo, but it has been renovated 40 years ago, after being half destroyed during WWII. So it’s got ugly 80s decor vibes. And yes it’s called a château