Bear in mind in Europe tons of buildings merged both Medieval and a Modern (Englightened) era as progress happened. For instance, the style of the buildings in the the old town of Salamanca, which is obviously not 100% medieval.
There's something similar in France, built by a lone poor mailman on his off time over a period of ~33 years. Now that I'm reading about it, it doesn't even have an English Wikipedia entry (!). Which is a shame, it's arguably incredibly beautiful and definitely a unique piece or architecture/art.
To me it has more of a Sagrada Família vibe than medieval castle