In Strata, the original planetary Home of the Human Race. Left behind somewhat in the move to colonize the Galaxy, Real Earth has become somewhat insignificant in the scheme of things and very few people actually live there any more. It has the same sentimental significance that Rome (the city) would have had after the capital and political centre of the Roman Empire moved to Constantinople. Notable in the book as the birth-world of Marco Farfarer and Kin Arad.
It appears in all ways to be a futuristic parallel of our own world except with some major exceptions. For example: that Rome was named Reme, The Americas being discovered by the Norse (and being called Vallhalla) and a large moon present around Venus.