Readers in every issue since 1993 are challenged to identify a secret international location. Each page is a puzzle ranging from desolate deserts and scintillating cities to architectural icons and undersea wonders shot from a glass-bottom boat.
There are no dead giveaways.
The clues are there for those with good visual memories who have been around the world more than once. And for those who haven't, you can still test your travel savvy.
One invitation to figure out where a photo of an earth and stone structure was shot begins like this: "You are looking into a spiral pit, one of a series dug into the ground by a pre-Christian civilization." Another begins: "You are standing in a former watchtower...surveying a town that has looked this way for five hundred years."
You won't have to wait a month to get the answers as in the travel magazine's "Where are you?" page as they are listed in the back of the book ($65).