Arkology

Megastructures (usually in the form of a tower) designed to house the remainder of Terra's population. Designed to be self-contained and as self-sufficient as possible. Supplemented by materiel and resources from Agriplex, Arkipelago, and Orbital Station megastructures. Named after violent/angry goddesses as a reminder of humanity's failure to tend to Terra and how She lashed out at them in return. Located as much as possible in geologically stable areas.

Eugene Tsui's Ultima Tower

Reference: The "Ultima" Tower, Two-mile High Sky City