Greenbank Mills is running a Groupon that equals half off admission, today through noon Thursday.

Here's the Groupon link.

Greenbank Mills and Philips Farm is a kind of living history museum, a little west of Prices Corner, off of Newport-Gap Pike.   It's a lot like Hagley Museum, but without the heavy DuPont connection (no, I love Hagley, but you have to admit that parts of it are one big DuPont promotion). 

Visit the website to get a better idea - http://www.greenbankmill.org/ .  The only thing about this Groupon is that you have to use it during one of the four Saturdays in October, but if you can swing that, it's a good way to see a Wilmington area museum that few people know much about.