This article discusses 15 ancient megaprojects that have been largely forgotten by history. These projects, ranging from massive temples to sophisticated irrigation systems, showcase the impressive engineering and architectural skills of ancient civilizations. Despite the grandeur and complexity of these structures, they have been overshadowed by more famous ancient wonders such as the pyramids of Egypt or the Great Wall of China. Some examples of these forgotten megaprojects include the underground city of Derinkuyu in Turkey, the Great Dam of Marib in Yemen, and the city of Great Zimbabwe in southern Africa.

By highlighting these lesser-known ancient feats of engineering and construction, the article aims to shed light on the incredible achievements of civilizations that are often overlooked in discussions of history and archaeology. Overall, these forgotten megaprojects serve as a reminder of the creativity, innovation, and capabilities of ancient peoples in building structures that continue to inspire awe and admiration today.