渋谷パルコ (Shibuya PARCO), on the 4th floor, has increased the number of orange pipe benches indoors, though there used to be outdoor benches under the stairs (apparently unrelated to the shops). I highly recommend you try sitting on them! The seating is incredibly uncomfortable. It's almost like a torture device disguised as a chair. Oh, the horrors of Shibuya…
I guess they don't want you to linger… But hey, indoor benches with air conditioning are the best!