Prizren is a small, authentic, but vivacious city in Kosovo. The walk uphill to the castle ruins is a must, especially at sunset, as the city view is very rewarding. There are plenty of historical and religious buildings and bars and restaurants, and not so many tourists yet. At least there weren't when I was there in June 2018, and I believe a visit is worth it. More importantly: it is unforgettable! People are very hospitable. On its Bistrica or Lumbardhi river every late spring in June, there’s the Bunar Fest where you can show how brave you are by floating down the river using inner tubes of tractor tires. Don’t forget your helmet!