Sapporo from Television Broadcasting House roof tower
Obon is one of the most important traditions for Japanese people. It is a Buddhist event and is the period of praying for the repose of the souls of one's ancestors. People believe that their ancestors' spirits come back to their homes to be reunited with their family during obon. Obon is an important family gathering time and many people return to their hometowns.
Dates of the festival vary across Japan, but on the 15th July this festival is celebrated in Sapporo, site of this live webcam view.