One of these things is not like the others~
Seriously, my first thought was “castle porn” and then I see someone already said it. :D
Is one of these things an Opera house?
The second to last looks an awfully lot like the paris opera house.
or maybe someone liked the opera house so much they put it in their castle. I dunno. rich people.
Well the president has a movie theater in his house. Why can’t some rich 16th century bastard be like THERE SHALL ALWAYS BE OPERA IN OUR HOME. Then holds an opera company hostage, Kim Jong Il style and forces the, to teach him how to make opera.