"Heaven on earth" is a phrase that is often used to describe a state of perfect happiness or a utopian place or situation. However, there are many synonyms for this phrase that can also be used to convey a sense of bliss, contentment, and joy. Some suggestions include "paradise," "utopia," "Shangri-la," "Eden," "Elysium," "Nirvana," "blissful realm," or "Arcadia." Each of these words has its own connotations and nuances that can be used to evoke a different sense of perfection, from a lush and idyllic landscape to a state of spiritual enlightenment. Whatever synonym you choose, it can help to convey the idea of a perfect world where all is well and happiness abounds.