[As Frasier carries Niles through the supposed "Platinum Door" of the spa:]
Frasier: [gasps] Niles! Healing warmth and light! It must be a magnificent solarium.
Niles: Goodbye sweet and edible facials, hello radiant life-givingsun!
[On the other side, which is revealed to be nothing more than an alley behind the spa:]
Niles: It's beautiful. It's beautiful.
Frasier: Yes. This is where we belong.
Niles: Do you smell garbage?
Frasier: Oh dear, Niles. I don't think this is part of the spa. [banging on the door] Hello! Hello! Anyone in the relaxation grotto!
Niles: Frasier, look at all those bees.
Frasier: Bees? Niles! Our sweet and edible facials! Run!