An ancient world lost in time where the capital of the world is Babylon, the City of a Thousand Gods.
Where the Old Gods walk the Earth.
To the north is the Icelands. The oceans are low and there are far more lands of man and monster.
The base of this setting will be the Little Barony located somewhere around where England is today some mythic age possibly 15,000 to 25,000 years ago.
Huge animals run free.
I want to include Silurian animals and forest.
Pangea or Ice age world with the sea levels a few hundred feet lower?
Just a few ideas.