- There is an Aiki Shrine of Aikido in Yoshioka, Kasama City, Ibaraki Prefecture (formerly Iwama Town). This is the place where Aikido founder Morihei Ueshiba Sensei founded the Aiki Shrine in the Showa 10s, and it is said to be the place where Aikido was perfected. The founder himself called this place "the birthplace of aikido", and it is said to be a sacred place as a martial art "Japanese martial art" that developed from ancient martial arts Japan and is a martial art for mental and physical training. It is the only aikido shrine in the world and the Aiki Grand Festival is held every year on April 29.