Osaka-jo Castle, Himeji-jo Castle, Nagoya-jo Castle, and son on.
These most were made for the age of civil strife in Japan.
It is 15-16 centuries.
The Japanese still visits the fine castle of each place by sightseeing.
It is because a fine castle has the grand appearance and history.
In addition, the Japanese fine castle is popular as a toy.
It is a plastic model and a block.
These are popular from a foreigner.