8 needed to calculate an average
A group of men arrives at a huge walled garden, only to find it temporarily closed. Their disappointment at not getting to enter does not last long, though, as they stumble across a large gap in the wall nearby. Now inside, they are free to explore the vast garden however they wish. However, the enclosure is not filled with plants and other organic matter, but with bizarre structures like perfectly square lakes, libraries housing impossibly sized books, and glass mountains as far as the eye can see.
Another manga that doesn't really have a story. Instead, the manga depicts its character(s) wandering around, looking at things, and sometimes talking about what they're looking at. The Walking Man is hyper-realistic (and has actual characters), whereas the scenery in Garden is bizarre and fantastical, and its characters don't have names, personalities, or even recognizable faces.