Aichi is the center of the Chubu region in Japan, and its capital is Nagoya. Nagoya is the fourth most populated urban area in Japan, and is home to a large automotive industry, industrial art museums, the Atsuta Shrine, and much more. Nagoya is so important to Aichi, that Aichi Prefecture was actually called Nagoya Prefecture for a time, before being merged with another area.
Aichi is also home to the Nagoya castle, in which the Tokugawa family resided. It was a very important castle during the Edo period, as the town linked two major trade routes in Japan, and was a major strategic point. Unfortunately, it was completely destroyed during bombing runs in World War 2, and while it has been rebuilt, complete reconstruction is planned to finish by 2018. Nagoya castle is famous for the golden Shachihoko (mythical creature with the head of a tiger and body of a carp), an ornament on the roof of the highest tower. Each carp, thought they look small from the ground, is actually close to 3 meters in length and weight a ton (Literally)!
The prefecture is also known for its wide variety of festivals, many of which are UNESCO Intangible Cultural Heritage. They have historical festivals like the Nagoya Festival, which showcases the three heroes of Nagoya (Oda Nobunaga, Toyotomi Hideyoshi, and Tokugawa Ieyasu, the three men credited for creating the Edo Shogunate), as well as more unique ones like the Hadaka Festival, or Naked Festival, in which participants wear nothing but a Japanese loincloth and celebrate a bountiful harvest.
Particularly Nagoya is also famous for its Miso-based dishes. Anything from traditional Red Miso Soup, to Goheimochi or baked rice with red miso paste, to Miso-katsu or pork cutlet with red miso paste, and much much more foods with red miso paste. As you can tell, red miso paste is very important to those who live in Aichi.