Ueno Summer Festival
Time Out says
Ueno natsu matsuri (summer festival) will have market stalls in the park throughout the four-week long period selling antiques, potted plants and more, while street performances take place at the Bentendo temple. Make sure to also check out Ueno Park's open-air stage, where everyone from pop idols to jazz veterans will be performing almost every day. Catch the monkeys from Nikko Saru Gundan doing some tricks and dances on stage this weekend (August 10-12).