Like many others have said, the shopping here can be quite expensive - however! If you're a mall wanderer, or just need a break from the heat outside, this place is great. There's cool bathrooms on many floors, one has a "deodorizing air shower" that my group didn't try, but it'd definitely be an interesting experience!

There's many seating areas close to the washrooms on various floors. Also on the 11th floor is a convenience store (Lawson's, but PSA that I didn't find any Salmon Onigiri), and you can see Shibuya crossing from up here. Photos may be difficult because the outer glass is quite dirty, but it's a fun viewing experience.

On the basement floors, there's two gelato places I believe. We hunted for Tofu ice cream, which this one had, though my group mates commented that it wasn't as similar as the specialty tofu ice cream they tried while in Kyoto.