Paris is a city with horizons on the mind, for one.

For two, there is a secret that roof access of almost any public building — museum, indoor garden, etc — is granted for a fraction of the cost of general entry.

From the top of Centre Pompidou, you can see the snail’s shell spiral of all the city’s arrondissements. If you get there in the early morning, when the sun is crying petulant heat waves, they won’t have opened the roof deck for lunch yet.

Instead, a hundred quivering roses and empty chairs, waiting.

Who is coming?