通天閣
The retro tower watching over Shinsekai, best known now for the spiral slide bolted to its outside — 1,000 yen gets you from the lower deck down to the base inside a narrow tube. The observation deck is windy enough to feel unserious, but the photo of the retro streets below is the one people come for. One source prefers Umeda Sky Building's view; the other agrees but notes you can't get that shot from Umeda.