Superior

Named after the greatest of the Great Lakes, Superior (core launched in 1997), is the first structure that could truly be called a spaceport. It features one ship drydock and eight satellite construction and repair bays, as well as a spinning habitation section that can provide gravity. It has been permanently manned since the core module was launched in 1997, with much of the original crew settling mostly permanently in space.

Superior has remained at the forefront of human space efforts and now supports a permanent population nearing one thousand, while servicing thousands of visitors every year: researchers, graduate students, and university representatives; film crews and actors; government officials and international delegations all routinely spend time on Superior, though they are all secondary to Superior's primary function: administrative center, mission control, shipyard, and starting point for all Usonian interplanetary missions.