Zillow Advice: Home Ownership - What's up with the giant ball on top of this house? Just curious and dying to know! :) http://www.zillow.com/advice-thread/What%27s-up-with-the-giant-ball-on-top-of-this-house-Just-curious-and-dying-to-know/334049/ Zillow Advice | Zillow Real Estate It looks like a private planetarium. ... http://www.zillow.com/advice-thread/What%27s-up-with-the-giant-ball-on-top-of-this-house-Just-curious-and-dying-to-know/334049/ It looks like a private planetarium. What else would you do up there? Sun, 14 Mar 2010 19:21:00 GMT http://www.zillow.com/advice-thread/What%27s-up-with-the-giant-ball-on-top-of-this-house-Just-curious-and-dying-to-know/334049/ 2010-03-14T19:21:00Z