Hell and heaven stand side by side. As Matt said, it is a condition. In Scripture the rich man and Lazarus shows us this. And according to Orthodoxy there is NO PLACE where God is not present. He is everywhere. God exists as Uncreated Light. A life spent cultivating mercy, kindness, charity, patience, forgiveness, and love for God will create a reaction to God’s uncreated Light that is a WARMING sensation. A life spent in arrogance, idolatry, ego, lust, greed, and sin will illicit a BURNING sensation when encountering the Living God.
Hell is very much, as CS Lewis asserts, a prison where we choose to be with us holding the key...