Read it through once

The bridges are of a single span--a single arch--of cut stone, without a support, and paved on top with flags of lava and ornamental pebblework. Everywhere are walls, walls, walls, and all of them tasteful and handsome--and eternally substantial; and everywhere are those marvelous pavements, so neat, so smooth, and so indestructible. And if ever roads and streets and the outsides of houses were perfectly free from any sign or semblance of dirt, or dust, or mud, or uncleanliness of any kind, it is Horta, it is Fayal. The lower classes of the people, in their persons and their domiciles, are not clean--but there it stops--the town and the island are miracles of cleanliness.