Katsuobushi, a type of dried and smoked tuna that is often used to flavor dishes and is a key ingredient in dashi.

The first novel ever written, The Tale of Genji, was written in Japan in the 11th century by a noblewoman named Murasaki Shikibu.

Osaka Castle is a famous landmark in Osaka and a popular tourist attraction, with a museum that showcases the history of the castle and the city.