I noticed that there wasn't a "Geography by Letter - X" quiz in the Geography by Letter series. As such, I decided to create one to complete it. If you have any comments on it, feel free to share them here. Here's the link: https://www.jetpunk.com/user-quizzes/2354913/geography-by-letter-x
If you want to add more answers, here's another one: Xanthi - https://en.wikipedia.org/wiki/Xanthi