Though this cover image is not of Kumamoto Castle, this article says that Kumamoto Castle has been ranked as number one of all of Japan’s castles in a survey done by travel website TripAdvisor.
“Taking the top spot was Kumamoto Castle. Oddly enough, Kumamoto was the only member of the group traditionally referred to as “Japan’s Three Great Castles” in the top 20, as neither Osaka nor Nagoya Castle were chosen for the honor.
Visitors ranked Kumamoto highly for its watchtowers and sweeping stone foundation created by master castle designer Kato Kiyomasa. One visitor remarked that the building’s low ceilings and squeaking wooden nightingale floors, designed to alert guards to the presence of an intruder, made hum feel like he had slipped back in time to when the structure was first built, 400 years ago.”
http://en.rocketnews24.com/2013/06/21/travelers-rank-japans-20-best-castles/
