A series of books written by author Rick Riordan, which is miles better than the similar but inferior series, Harry Potter.

Olympian Republic, also Republic of Olympus, is the name of a fictional and hypothetical country, that's basically a mythical and esoteric version of Greece that follows Olympianism and its main politics and as state religion. Olympian Republic supports the restoration of all ancient Greek temples and the reformation of Greece into become a full Olympian and ancient hellenic world adapted for the modern times.