The river illios is noted often in ancient times, and referred to in one of Plato's dialogs (see below).

However, today, it is largely covered up and a sewer.

Here is about the only stretch where it is still available to be seen.

I'm not sure there actually is any water flowing here, but there might be given the trees.

In the opening of Plato's Phaedrus, Socrates and Phaedrus are walking along the river and looking for a good grassy spot to stop and talk. Of course, that dialog may be fictional, but it is fun to speculate on were they were. The dialog has a couple of clues to their location. If I can figure anything out, I'll post it here.
Last modified 9/24/10. Original content © 2010, 2000 John P. Nordin