Dis:
   A city of Hell, from _la Divina Commedia_. ([Dis] is the Latin spelling of a pre-Classical Roman name for
   the underworld and/or its ruler; the Italian form is [Dite].)

Sibylla Plaza:
   From Latin [sibylla], an oracle, especially the Apollonian prophetess at Cumae. (The Italian is
   [sibilla].) A reference directly to Virgil's _Aeneid_, in which the Sibyl accompanies Aeneas through the
   underworld -- just as a version of Virgil later accompanied the narrator of the _Commedia_.

Ezov Park:
   Hebrew אזוב‎, a plant mentioned in the Bible, plausibly [Hyssopus officinalis], but not definitely so.

Harla Shire:
   Icelandic [harla], "very". Alternatively, named for the Harla people, an extinct ethnic group in (mostly)
   Somalia. Alternatively, named for Harlan County, Kentucky, setting of the recent TV series _Justified_.
   Alternatively, named for Harlan Ellison, noted SF author.

Railyards:
   Middle English [reȝol] "ruler, straight bar" + [ȝerd] "yard (unit of measurement)". I infer that a "yard"
   is now standardized as two cubits -- unless "league" was fixed and "cubit" was redefined to make a league a
   myriacubit, in which case a yard is now roughly 1.894 cubits. Alternatively, this paragraph is very silly.