Neighborhood 1

Neighborhood 1 was the main neighborhood featured in The Sims. N1 featured the residents of Sim Lane that later became Pleasantview in The Sims 2.

In The Sims, N1 was referred to as SimVille by players, though players know that the whole universe is in SimCity, and in the further expansion packs explains that the whole country is SimNation. It only showed Sim Lane. Later on with the Unleashed expansion pack, a whole new area was put in called Old Town. It was then possible to visit shops and parks.

The neighborhoods ranged from 1 to 8, the second one featuring the Mashuga family. Old Town, however, didn't change in each neighborhood. (Unless you had edited it.)