Google Earth - Kennebunkport, ME question

Recently the imagery for Maine was updated and I found this unusual “building” near the golf course in Kennebunkport. Any one have any ideas on what it is?

Building with large boobs

It appears to be a private home called Lockesland.

http://www.concrete-domes.com/domeschool.htm
http://www.concrete-domes.com/gallery.htm
http://www.roomzaar.com/rate-my-space/Home-Exterior/Lockesland/detail.esi?oid=3874698

Amazing, just amazing. 55 minutes and the correct answer. Thanks!