Here's the thing about those wandering freelance guides who corner you as you stare up in wonder at, let's say, the Blue Mosque in Istanbul, the National Palace in Mexico City or the Monastery of San Francisco in Quito.
First, they are probably not history professors, as they always claim. Second, the tea is never "free." And third, you will end up at their cousin's shop and you will buy an Oriental rug, a pair of Mexican earrings or an indigenous Inca scarf. Whether you like it or not.
So I am standing on the corner, looking up at the monastery in Quito's elegant old town, when I feel a tug on my shirt.
I look down to see a man built like a fire hydrant, his face brown and wrinkled as tobacco leaves, his teeth square and yellow, like Chiclets. He wears dirty jeans, a plaid shirt and a baseball cap.
"San Francisco," he says in accented English. "Oldest church in South America."
Here we go.
Señor George then launches into a practiced spiel about how his guided tours of old Quito will impart the love and lore of the city, how I will come away a wiser and richer man for this education, which, it should be mentioned, is very cheap -- "almost free."
How much?