They are smiling for the photo, but they may not be impressed.

European tourists often arrive in the United States with a set of expectations shaped by movies and television. When they are confronted with the reality of American urban life, particularly its vast scale and reliance on the automobile, the experience can be a source of bewilderment and private mockery. While they appreciate the grandeur of the national parks and the energy of a few key cities, others are seen as culturally baffling.
These are the American cities where the urban planning, culture, and lifestyle are often the most alien to a European sensibility, leading to some good-natured (and not-so-good-natured) jokes.