The annual Hibiya Park Marunouchi Ondo Bon Odori. An international crowd supplemented by the office workers from the nearby Marunouchi and Otemachi areas. The fountain is lit up and the plaza is lined with stalls. The event runs from 6pm to 9pm both nights.
Event details are taken from official sources whenever possible. It is always prudent to check the official event website before attending to make sure that there have not been any changes. If you know of an error in the calendar, then please let me know through the contact form.