I wen to Tokyo Mid Town to visit dentist for dental check up. I found interesting summer event there and love to share. Some of them relates to Japanese custom and culture and the foreign visitors might enjoy there together.
There are some craft workshops for kids which offer daily from 11 am to 6 pm.
Ashimizu Water bath for foot to chill your body.
The picture is a image of Japanese warm food bath. The facility is often seen near Onsen hot springs.
The one in Tokyo Midtown is cold water food bath. As you can imagine soaking the food in cold water make body chill. I'm sure it is comfortable in 35 ℃ outdoor! I didn't have enough time today so I didn't experience but I will come back next time visiting.
There are digital art garden and wind chime shade are beautiful. If you are getting tired of the warm weather, it is worth to visit to have something fun.