From gravity-defying cities to sky-high pyramids, explore the world’s most ambitious megastructures that were never built.

Dyson sphere stability — once considered an impossible physics problem — may be within reach. A peer-reviewed paper in ...

Explore visionary megastructures poised to redefine our future, from Earth's towering arcologies to colossal space-based constructs. This video delves into groundbreaking designs like Japan's Shimizu ...

This programme unveils the engineering secrets of six iconic megastructures that went on to spark a technological revolution, ultimately changing warfare forever. The Nazis built some of the biggest ...