Aichi's location in the center of Japan has resulted in influences from both Kanto (Tokyo area) and Kansai (Kyoto / Osaka area).
The main city of Aichi is Nagoya. There are many places to go and things to see in Nagoya.
Aichi castle (as shown in the picture above) is seen as a kind of landmark for the city.
As for food, local specialities include Misokatsu (pork cutlet and rice bowl with Japanese sauce), Tebasaki (a kind of fried chicken) and Hitsumabushi (broiled eel with rice).
Aichi was also host to Expo 2005- the first Japanese expo of the 21st century.
Nagoya lies within half an hour of the airport, and is easily accessible, either by road or the new railway.
The atmosphere around Nagoya station is very similar to that of Tokyo. In this area you will find many cafes and exclusive clothing stores.

For more detail, check out Aichi Prefectural Government Official Site