I have a long layover at Frankfurt - arriving from the US at08:00 and departing for Seoul at 18:00. I though that I had booked for a overnight, but just realized that my tickets were the same day.

Anyone have any ideas of what to do in the area? Yes, I know I can get a day room at the Sheraton - but at 137 Euros ++ it seems like a lot. I am open to ANY other suggestion.

Thanks
MIKE