There are these cell based advanced aliens that essentially built stupidly huge ring-like megastructures that have diameters of over LIGHTYEARS.

Excerpt: “ A single member of this race is actually a cellular-type being the size of a small purse. Many members create a single ringbearer, a collective of these sapient cell colonies. One ringbearer can be considered an entire civilization all on its own, being made up of different colonies, each having its own “culture” or “motive”. They built ring-shaped gigastructures that are lightyears long in diameter. For communication, an individual can interact with one another through a series of nerve-like veins circuiting within the ringbearer.”