In Hiking with Nietzsche, the author, John Kaag, is revisiting the Swiss town of Sils-Maria, where Nietzsche wrote Thus spoke Zarathustra. Despite the title, neither entirely about Nietzsche or hiking; more of a memoir and biography of the author himself, and his perception of the life and philosophy of Nietzsche.
I particularly liked to read about the Waldhaus-Sils Hotel (a must-visit in Switzerland) and the concept of eternal recurrence, put forth by Nietzsche in Gay Science—If life were to be repeated for all of eternity, would you live differently each day? What would you do, who would you want to be?
A well-written and thought-provoking book I would recommend if you like Philosophy (and/or Friedrich Nietzsche, of course), or just want an unusual and relatively easy read.