Alice City
Alice City is an underground city that the Taisei Corporation has proposed to build in Tokyo, Japan, as building underground costs less in the now highly built-up Tokyo. The plan proposes that many industrial facilities would be better suited to having subterranean equivalents e.g. warehouses, railroads, and certain manufacturing facilities. If built, it will also contain commercial and residential spaces, which will be serviced by dedicated power and waste recycling facilities.
The initial cost of building the city is said to be $ 4.6 billion.