3. Eltz Castle, Germany
Eltz Castle is a medieval castle nestled in the hills above the Moselle River between Koblenz and Trier, Germany. It is still owned by a branch of the same family (the Eltz family) that lived there in the 12th century, 33 generations ago according to Wikipedia.

The Swallow’s Nest isn’t in Ukraine.It belongs to Russia.
Love that Bran is on this list, but I also find the other recommendations useful. I love visiting castles because they have always such interesting legends and stories related to them. And of course, it doesn’t hurt that you feel like in a fairy tale in such a castle.