Provence is a destination that has captivated travelers even before Peter Mayle’s 1989 best seller “A Year in Provence” immortalized its charms. Now, the new book “Markets of Provence,” by the travel writer Marjorie R. Williams, 57, along with Dixon Long (her co-author on “Markets of Paris”), explores an often-overlooked reason to visit: the abundance of markets.

Although the region has close to 500 markets with vendors selling food, antiques and crafts, Ms. Williams’s book is a guide to the 30 she found most appealing during the several months she spent in the area for her research.

Below are edited excerpts from a conversation with her.

Q. How do you think Provence’s markets give an insight into Provençal culture?

A. These markets are untouched by time. They’re in the same location and serving the same purpose as they’ve been doing since the Middle Ages. And they’re gathering spots for villagers who come not only to shop but also to see friends. And so, travelers who structure their itinerary around market days will see the towns spring to life, and by going, they are participating in an authentic tradition, enjoy beautiful scenery and get a sense of the local community.