Japans Great Pyramid of Giza

London, October 1992, a Japanese man entered a government building near Chancery-lane and made his way up to an office on the first floor. This was the London branch of the UK's patent office. This man was there on behalf of Japan's renowned Shimizu Corporation. A leading architectural and engineering firm that was and is among the top in the world. He was there to apply for a patent. To secure their ideas globally, it was necessary to apply not just in Japan.

This particular patent was for no ordinary idea. It was for something grand, something spectacular. The idea was to build giant pyramids in the middle of some of the largest and busiest urban centers in the world starting with Tokyo. These infrastructures would be so large, they could house entire cities.

But why? What was this for, and who exactly is the Shimizu corporation?