At the center of Midgard lies Bifrost, the Orbital "String" Tower. The Tower reaches from the surface of the planet to the lowest of orbits, where a complex of space stations resides.
Built as the YMIR were rising to power, this tower is a bridge to the orbital facilities of the Aesir, where precious materials are synthesized in a variety of zero to low gravity environments. Orbital monitoring systems are also present, but are radically hindered by the presence of impenetrable cloud cover and the skein of nanotech that the development of Cyberspace brought to the planet. The String connects the territories of Midgard and Asgard, "earth" and "heaven". The String affords the Aesir the ability to manufacture and refine materials free from the interference of the machines.