According to CityLab, London almost had a “Death Pyramid” — a towering mausoleum that would have interred around 5 million residents.
In the 1820s, the architect [Thomas Wilson] proposed to build a colossal pyramid called the Metropolitan Sepulchre. Sited for Primrose Hill, today a park area in North London, the necropolis was designed to alleviate the overpopulation of London’s graveyards while adding a looming monument to mortality to the city’s skyline.
With the Metropolitan Sepulchre, Wilson envisioned a honeycomb of catacombs, each one capable of holding up to 24 coffins. The whole structure would have occupied a plot 18 acres in area; at more than 90 stories tall, it would have easily eclipsed St. Paul’s Cathedral.
While it may have been inspired by the Great Pyramid at Giza, this necropolis was meant to be a true city of the dead, not just a palace for a pharaoh. The British pyramid would have served as the final resting grounds for some 5 million Londoners had the city gone with Wilson.
As the article notes, such “vertical cemeteries” are catching on throughout the world’s fast-growing cities, from Mexico City and Paris to Mumbai and Tel Aviv. As humanity continues to urbanize like never before, perhaps we can expect more audacious necropolises bestriding our modern skyscrapers.