This is a 'deep stambh' i.e. a candle stand. You can find many such stands created all across India. If somebody places a candle in all the blocks, the real beauty of this architecture could be seen.
Few links:
http://prayaan.blogspot.com/2009/09/shree-ramnathi-temple-ponda.html
http://goanarchitecture.blogspot.com/2007/12/deep-stambh-towers-of-light.html
