SimCity

Sim City is the city in which all of the games in the Sim Series are based in. This is also where the services come from. Buy Mode items are also apparently made there as well. In The Sims, the main stretch of community beach is named "SimCity Beach," implying that Downtown is part of SimCity. In The Sims 2, The newspaper and many city services and agencies are labeled "SimCity", this seems to indicate that the Neighborhood is in or directly adjacent to SimCity.