A beautiful and fascinating town in the Haut Vaucluse region of south-eastern France. I first visited Vaison in 2010 and instantly fell in love with it. During my second visit, also in 2010, I began to germinate the idea of a fantasy city based (albeit loosely) on this town. The core concept of Ilayson having a new and old city, separated by a The Bridge and the Riverbridge over a river, was born as I wandered dumbstruck around the medieval, labyrinthine streets of Vaison's old town. It was also during my second visit that I spawned a fascination with the doors in the old town. I took innumerable photographs of doors and intend to use them as visual aids in game sessions, as the PCs begin to explore Ilayson and its many secrets that lie behind ornate and idiosyncratic doors.