Belief in Heaven is an essential part of the great monotheistic religions of Judaism, Christianity, and Islam. Famous theologians have written about it, and ordinary theists hope to go there after death. However, the concept of Heaven is neither clear nor unproblematic. There are three serious problems with the notion of Heaven. First, the concept of Heaven lacks coherence. Second, it is doubtful that theists can reconcile the heavenly character of Heaven with standard defenses against the argument from evil, such (...) as the free will defense. Finally, Heaven is unfair and thus in conflict with the goodness of God. -/- 1. Introduction -- 2. The Traditional Doctrine -- 3. The Coherence of Heaven -- 4. The Problem of the Heavenly Character of Heaven -- 5. The Unfairness of Heaven -- 6. Objections - 6.1 Objection 1 - 6.2 Objection 2 - 6.3 Objection 3 - 6.4 Objection 4 -- 7. Conclusion. (shrink)