Harry Potter Universe

From Harry Potter - Wiki on Neoseeker

The Harry Potter Universe is a fictional world hidden within the Muggles world. There are some places mentioned and used within the Harry Potter Universe that are real, such as London and Kings Cross Station, but also a lot of fictional places such as Diagon Alley, and Platform 9 and 3/4's. Various area's are also hidden within real areas, such as 12 Grimmauld Place, which is a real building hidden by magic.