I don't have much knowledge about the architecture of the castle, but what special about the above 4 is that they are original. Whoever been to Osaka Castle or other rebuild castle around Japan will know what I meant. Matsumoto Castle was able to avoid severe damage during war-time, unlike Osaka Castle which have modern elevator in it, most part of the castle has been preserved. The corridor is narrow, ladder is steep. Walking inside it just make you feel like you were in the samurai period of Japan.
It was cloudy that day and definitely add some special atmosphere on the photo which I kind of like.
A secondhand bookstore that mimic the looks of the Castle stood out in the middle of concrete building.
Shop-lots around the castle all have a special touch of creamy white paint