Reminds me of a temple to a Mesopotamian idol.
Modern Stonehenge. Filled with modern Druids.
The design was inspired by Stonehenge and the Pantheon.
http://www.cathedralparish.org/architecture.htm#Intro
My thought is that they planned a second story, but ran out of money before they could add the roof and curtain walls. It has to be one of the ugliest church buildings that I have seen.
I visited a town south of Indianapolis one time (Columbus?) which was proud of the architecture of its churches. A few of those were quite ugly as well but nothing in this league.
Here's a selection:
http://www.bluffton.edu/~sullivanm/colselsaar/elsaar.html
http://www.bluffton.edu/~sullivanm/birkerts/birkerts.html
http://www.bluffton.edu/~sullivanm/colsnxian/colsnxian.html
http://en.wikipedia.org/wiki/First_Baptist_Church,_Columbus,_Indiana