Leningorá was an arcology, a massive architectural residence located in Red Square in Moscow during the 23rd century.
History[]
In 2277, while under the influence of an illusion-generating machine, Pavel Chekov saw Leningorá in Red Square, along with three nearby arcologies Kalilingrad, Red Star, and Spirit of Tomorrow. (TOS - Plot-Your-Own Adventure Stories novella: Distress Call!)