What is the best level in super mario 64?

[Snow-Thunder]

What is the best level in mario 64, as a communicative decision.

By level, I mean an area you can collect stars in and stars only. No cap switch rooms but bowser stages and peach’s castle secret areas are allowed.

[Shin FireyPaperMario]

Prepare to hate me for saying this, but I say Wet Dry World!

Two reasons:

1. I liked the concept of changing the water levels in a 3D platformer
   
2. Personal reason: I can get every coin in that level in 1 go
   

[Barack Obama]

Bowser Stage 3, always liked the traps and the play with gravity.

If I had to choose a normal level, it would be Bob-Omb's battlefield. It's a nice starter level and when I think about Mario 64, it's always an image of this level or the last Bowser fight.