Bodhidharma talks about this.
"To search for enlightenment or nirvana beyond this mind is impossible. The reality of your own self-nature the absence of cause and effect, is what’s meant by mind. Your mind is nirvana."
"Not suffering another existence is reaching the Way. Not creating delusions is enlightenment. Not engaging in ignorance is wisdom. No affliction is nirvana."
"The impartial Dharma is only practiced by great bodhisattvas and Buddhas. To look on life as different from death or on motion as different from stillness is to be partial. To be impartial means to look on suffering as no different from nirvana,, because the nature of both is emptiness. By imagining they’re putting an end to Suffering and entering nirvana Arhats end up trapped by nirvana. But bodhisattvas know that suffering is essentially empty. And by remaining in emptiness they remain in nirvana. Nirvana means no birth and no death. It’s beyond birth and death and beyond nirvana. When the mind stops moving, it enters nirvana. Nirvana is an empty mind."
So it appears that you don't go anywhere, you just stop making delusions.