Most people are aware that the greatest fact about the Christian afterlife is that Christians will finally have the fullest possible communion with the triune God. As this is the greatest thing that can happen to a human person, it is a fact sufficient to make the Christian idea of life after death hugely exciting. But there are other exciting and sometimes overlooked things about Heaven, which are fun to think about. Here are some that come to my mind.1. We'll be able to interact and converse with people featured in the Bible. This includes saved persons from both the Old and New Testaments: e.g., Moses, Job, King David, Daniel, the Apostle Paul, Peter, John. Imagine what it would it be like to ask these folks about their lives and their circumstances in those eras!
2. We'll live with Christians and saved persons (some, in the Old Testament for example, were saved but never were formally Christians) from virtually every time and culture in the history of the world. I find it fascinating that we'll have the ability to talk with people from the beginning of mankind, ancient Egypt, the Roman Empire, the Middle Ages, etc.
3. Christian relatives, friends, and acquaintances (and non-human friends, i.e., pets -- I believe) will be there for us to see again and reunite with. This includes babies who may have died in the womb or very young and who we'll now see and get to know.
4. We'll have new bodies with new properties and abilities. In His resurrected body, Jesus was apparently able to walk through solid objects like walls and move from place to place quickly and suddenly. In our resurrected state, we'll seemingly have the same sorts capabilities.
5. I presume that those in Heaven will be able to tour the universe in its entirety, going to planets, galaxies, etc.
6. We'll see angels face-to-face and come to know them.
7. Events both tragic and good that puzzled us on earth will be explained and understood in the afterlife (at least, if we ask about them).
8. The new earth will have the beauty and natural harmony that Eden had (perhaps even grander) -- something we often wish we could see now but only get glimpses of.