Places > Arda
In the Letters
of JRR Tolkien, he tells that Manwe was
Lord of the Valar, therefore the high or Elder King of Arda. Arda
means "realm" and was the name given to our world or earth, as it is
place, within the immensity of Ea, selected to be the seat and special
of the King - because of his knowledge that the Children of God would
there". Eru does not physically inhabit any part of Ea.
Reference: The Letters of
JRR Tolkien: #211 "To Rhona Beare"