The United Nations Space Station is a space station in Earth orbit, built by the United Nations. The station cost $64 billion to build.
It was once nearly sabotaged by Ching and Zara to nearly fall into Earth's atmosphere, causing Superman to catch it and reverse its course. It was later discovered that the station was programmed by its saboteurs to apply braking thrusters and return to orbit if Superman did not catch it. (Lois and Clark: The New Adventures of Superman - Episode 321: Through a Glass, Darkly)