Where is Nibbána?

"Just as fire is not stored up in any particular place but arises when the necessary conditions exist, so Nibbána is not said co be existing in a particular place, but is attained when the necessary conditions are fulfilled."

In the Rohitassa Sutta the Buddha says;-"In this very one fathom-long body, along with its perceptions and thoughts, do I proclaim the world, the origin of the world, the cessation of the world, and the path leading to the cessation of the world."

Here world means suffering. The cessation of the World, therefore, means the cessation of suffering, which is Nibbána,

One’s Nibbána is dependent upon this one-fathom body, It is not something that created itself, nor is it something to be created.

Nibbána is not a sort of heaven where a transcendental ego resides, but an attainment (Dhamma), which is within the reach of all.