Cities — Underground

3. The Future: Ecological Preservation and "Inverted" Skyscrapers

The surface might be where we show off our architecture, but the underground is where we reveal our resilience. Underground Cities

Subterranean structures offer natural insulation , reducing the energy needed for heating and cooling. Underground Cities

This is one of the world's most famous "underground cities," a 32-kilometer maze of tunnels connecting shopping malls, hotels, and metro stations. It allows residents to navigate the downtown core without ever facing the brutal Canadian winter. Underground Cities