Final answer:
Paula McLain's book 'A Year in Provence' is set in the beautiful southern region of Provence, France.
Step-by-step explanation:
The location where Paula McLain's book A Year in Provence takes place is Provence. This book is a work of fiction that transports readers to the southern region of France, known for its picturesque landscapes, rich culinary traditions, and vibrant culture. The narrative captures the essence of living in this idyllic part of France throughout the different seasons of a year.