The Tokyo Marathon, first held in 2007, has become one of the most popular marathons in the world, with over 30,000 runners participating each year.

Okonomiyaki, a savory pancake made with various ingredients such as vegetables, meat, and seafood, is a popular Japanese comfort food.

The Heian period, which lasted from the 8th to the 12th century, was a time of great cultural and artistic achievement in Japan.