"The Watch-tower" by Lord Dunsany

The picture used is "Tower of Séguret's castle ruine" by XenonX3. Séguret being a commune in the Vaucluse department in the Provence-Alpes-Côte d'Azur region, built during the 11th century.

To follow along: https://www.gutenberg.org/files/13821/13821-h/13821-h.htm#tower