Beer Gardens are very popular in Japan, even though they do not always work all that well in the height of summer due to the heat and humidity which makes sitting outside even in the evenings not as pleasant as you might otherwise think. Therefore while there are beer gardens in some of the major parks in Tokyo, Osaka, etc., other beer gardens are indoors. Outdoor beer gardens work much better in northern Japan (Tohoku and Hokkaido) where the evenings are much cooler.
The highball boom in recent years has led to Suntory opening some highball gardens as an alternative. This location at the base of Tokyo Tower is open daily until late September. サントリー
Photo is a web capture for explanatory purposes, copyright belongs to the company.