Valinor
You may notice that this page doesn't have a ranking. This is because with all the elves gone, it is now impossible to visit. If you could though, it would be an amazing place filled with history. We could learn so much about the Valar, Trees of Valinor (depicted on the right), and the Silmarils. All that we have left are relics such as the Tree of Gondor and Mythril.
Credit: PChristos