This should maybe be filed under the heading ‘Fantasy Architecture’ but the proposal for a Mega City Pyramid in Tokyo Bay is genuine although currently not feasible until new materials are developed to support the structure.
Housing over 750,000 people the city is a self contained off shore development 2,004 meters (6,575 feet) high. Extreme Engineering ran a feature on the development including some interesting visualisations, as ever it is now available on YouTube and embedded below:
The clip moves between the ‘wow’ factor of building such a structure and the ‘disaster’ scenario of an off shore development in light of possible typhoons and tsunamis.
To be honest we can’t see it being built but the visualisation is impressive.