A picture of the Begich Towers with a quotation from Wikipedia as follows: Begich Towers operates like a small-scale arcology encompassing nearly all of the population of Whittier, Alaska. The building contains residential housing as well as a police station, grocery, and municipal offices. Whittier once boasted a second structure known as the Buckner Building. The Buckner Building still stands but was deemed unfit for habitation after the 1969 earthquake.[9]
Since SimCity 2000 I've been fascinated by the concept of Arcologies and the number of ways society has almost but not quite pulled them off.
Begich Towers almost count, but they were originally built as a military base so their self sufficiency is geared towards a goal, not simply existence