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

Dive into the depths of our planet as we explore the astonishing megastructures hidden within Earth. What secrets do they hold, and why is no one discussing these incredible discoveries? Join us on ...

"The transformation of the Bernabéu is one of the most spectacular constructions in the world in recent years, should be told by an organisation of the global standing of National Geographic. It is a ...

MegaStructures is a documentary television series appearing on the National Geographic Channel in the United States and the United Kingdom, Channel 5 in the United Kingdom, France 5 in France, and ...

The mysterious megastructures of ancient eastern Europe were hubs of social and political decision making, but their role in centralising political control may have led to the downfall of these ...