He could see the clear starry sky between the dark roofs of two penthouses.
The houses are built of clay with (generally) flat roofs impervious to fire.
But here was a fairy forest with black moving shadows, and a glitter of diamonds and a flight of marble steps and the silver roofs of fairy buildings and the shrill yells of some animals.
Moonlight spilled over triangular roofs into grassy front yards.
The famous Venetian pozzi, or wells for storing rain-water from the roofs and streets, consisted of a closed basin with a water-tight stratum of clay at the bottom, upon which a slab of stone was laid; a brick shaft of radiating bricks laid in a permeable jointing material of clay and sand was then built.