I found this free standing pet gate through Hammacher Schlemmer.  It’s the only sophisticated pet gate I’ve ever seen…..not an eyesore like every other pet gate I’ve used.  And, since it’s free standing, it won’t damage your walls (or your nerves!).  Small gate is $149.95, large size is $199.95.  A bit pricey, but hey, consider it a piece of furniture!

Photo Courtesy of Hammacher.com