Sixty years ago, famed physicist Freeman Dyson theorized that advanced civilizations, in their ongoing quest to find more living space and energy, would convert their solar system into a megastructure enclosing their star. This came to be known as a "Dyson's Sphere," a concept that inspired countless variations and other megastructure concepts. In this week's episode, we delve into some of the more exotic ideas and how they could be searched for by SETI researchers.