Aisai City is a city located at the western end of Aichi Prefecture. The city name comes from the Kiso River, another name for the Aichi River, which flows through the city.

Aisai City is a city rich in nature, history, and culture. The city is home to many historic and cultural properties, including the Katsuhata Castle Ruins, which is designated as a nationally important cultural property, and the waterfowl habitat in the lower Kiso River, which is designated as a national natural monument. there is. Additionally, rivers such as the Kiso River and the Nagara River flow through the city, creating an environment rich in nature.