Do you know Macyu Picchu? Actually it is in Peru, but in Japan we have a same kind of building in Hyougo prefecture. It is call " Takeda castle." It was built in the 15th and 16th centuries and it's located 354 meters high above see level. It located in high place, so if we go there September to April especially on sunny day, we can see a sea of clouds. It is very beautiful, so if you have a time please go there.