School’s out for summer, and for a lot of Americans, that means it’s time for summer vacation. That could mean an extended trip to the beach or visiting a historic site or landmark.

And people in the tourism industry are hoping millions of us find a way to one of those sites — while we’re also staying at a hotel and eating out a lot.

As much as tourism dominates Arizona’s economy, though, the concept of tourism is not a new one.

To learn more about the origins of tourism, we spoke with Brian Howell, anthropology professor at Wheaton College.