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layout: ../../../layouts/Wiki.astro
title: Megastructures
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Megastructure is a theoretical construct on a massive scale, designed to achieve specific functions, such as energy collection ([Dyson sphere](/wiki/megastructures/dyson-sphere)), habitat creation ([O'Neill cylinder](/wiki/megastructures/oneill-cylinder)) or planetary engineering. Construction of such megastructures requires astronomical number of resources, time, work and highly advanced technologies.

## Real-life examples
There aren't any megastructures built by mankind yet. However, there's ongoing research into various materials and technologies that could allow creation of such megastructures.