Real Earth
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 a futuristic paralell of our own world with the some major exception that Rome was name Reme, The Americas being discovered by the norse (and being called Vallhalla) and a large moon around Venus.