Wandering Witch: The Journey of Elaina, Vol. 4 (light novel) by Jougi Shiraishi
It's a wonder one witch can see so many fantastic places, yet never settle down. Then again, when your average encounter can include poisonous apples, meeting a spy, a rendezvous with a flying dragon, finding a sunken city, exploring an ice town, and more...you might find yourself reluctant to stay in one place, too.