Chokoku no mori (Open-Air Museum)

Oh boy, there are nudes everywhere, in various stages of nudity, shaped according to the weirdest stretches of imagination, and taking all kinds of postures
There are also some dressed people (including most visitors) and some other objects that don't necessarily need to dress

taking a picture of myself in a shiny sphere

The outdoor exhibit has about 100 masterpieces by sculptors of the post Rodin period. The Picasso Pavilion has about 300 works - one of the largest collection of Picasso works in the world. There are other four interior galleries - I've found there "The Kiss" by Brincusi. (No pictures allowed inside)