Nishio is known as one of the leading production areas of matcha in Japan, and this location has been particularly well known since the Edo period for the production of Owari Sencha (Owari green tea). Even today, Nishio’s matcha is highly regarded both domestically and internationally for its high quality. There are many cafes and restaurants in Nishio where you can experience Nishio’s matcha culture and enjoy matcha sweets and dishes.

This area has flourished as the border region between Owari and Mikawa provinces. In particular, Nishio Castle was one of the most important strongholds during the Sengoku period (1467–1568). The area was under the control of the Matsudaira clan (later the Tokugawa clan), the guardian of Mikawa Province, and prospered under the direct control of the Edo shogunate during the Edo period (1603–1868). There are also many unique festivals, such as the Nishio Gion Festival and the Mikawa Isshiki Grand Lantern Festival, which have continued for over 400 years. Nishio people are preserving their local traditional cultures and passing them on to the next generation.

Isshiki-cho, located in the southwestern part of Nishio, has been a thriving eel farming area for more than 100 years, taking advantage of its rich natural environment and clean water quality, and has been supplying high-quality eels all over Japan. Isshiki eels, which have been certified as a regional brand, are characterized by their fatty, plump, and soft flesh. Locally, there are many eel restaurants where customers can enjoy a variety of eel dishes offering deep flavors from traditional cooking techniques.

Nishio faces Mikawa Bay and offers beautiful coastal scenery. Sakushima Island, located in Mikawa Bay, is known as a unique tourist destination where art and nature are in harmony. The island attracts visitors with regular art events and hiking trails surrounded by lush greenery, giving them time to enjoy being away from their everyday lives.

Nishio faces Mikawa Bay and is surrounded by seas rich in seafood. Dishes made with the seafood caught in the bay are loved by local people and visitors from afar. Fresh clams caught in Mikawa Bay represent the best of Nishio’s seafood. A seafood market and direct sales shops are well stocked so that you can taste the unique flavors of Nishio offered in local seafood and sushi restaurants.

Kira Onsen is known as a historical and traditional hot spring resort surrounded by abundant nature. The view from the outdoor baths overlooking the sea is particularly spectacular. The sunrise and sunset views from them are especially popular. This area is also known as a place associated with the Kira clan. There are many historical locations nearby, such as the remains of Kira Kozuke no Suke's residence and the shrines and temples reached by interesting nature trails.