The sidewalks of Lisbon are so distinguished. All made of individual cobblestones, sometimes in staggering designs of black and white. I'm told that these are often the work of Brazilian stone workers, and that similar designs can be found in Rio de Janeiro. What you see here isn't the best example of Lisbon underfoot. But I include it here to show how America has contributed to the mix: the discarded wrapping from a McDonald's "apple pie."