Modern human groups must learn from History gone past, sure these buildings are beautiful yet useless in its purpose , it does not serve what for buildings built should do in their Utilitarian usage, even today people building huge mansions with only few asses rattling in it , wasting space, families have become more and more nuclear and so use space wisely leaving some for others also, accommodate everybody by creating, maintaining roof over heads first for all, those can be made in superlative aesthetic beauty why not, all buildings facades should rouse your sense of pride in you where you live, but human beings caught in vicious circle of self are not paying attention at all to fact that with so much given to certain circles even if they spent fraction in up keeping beautifying some of the same city it adds on not only to their name but to good facade face of city two village they live in.
Most palaces got a different designation. This one is kept intact to serve as a museum, a surviving artifact. There is usefulness in historical education too.