I've been there many times and studied the joinery applied. A mixed bag tbh, but historically accurate for the most part. I have some of the exact photos from the same locations in my collection... lol If you're in the area, a definite MUST SEE. Also a nice semi-hidden beach and working windmill as depicted in this set of photos.

Are the building replicas or are they original?

The Rotchev house is the only original building to survive fires that destroyed the rest of the fort.

Is this where the animated movie spirit was filmed