YES, NIRVANA is....

‘There is no spot, O king, where Nirvâna is situate, and yet Nirvâna is, and he who orders his life right will, by careful attention, realize Nirvâna. Just as fire exists, and yet there is no place where fire (by itself) is stored up. But if a man rubs two sticks together the fire comes; just so, O king, Nirvâna exists, though there is no spot where it is stored up. And he who orders his life aright will, by careful attention, realize Nirvâna.’

-Milindapanha

From "365 Buddha: Daily Meditations