on his walk after eating, what did the time traveller notice about the small houses and cottages?

The TT noticed that the small houses and cottages had disappeared.

‘Looking round with a sudden thought, from a terrace on which I rested for a while, I realized that there were no small houses to be seen. Apparently the single house, and possibly even the household, had vanished. Here and there among the greenery were palace-like buildings, but the house and the cottage, which form such characteristic features of our own English landscape, had disappeared.