The Rajarani Temple, located towards the north-east of Lingaraj temple and situated in the heart of Bhubaneshwar city, is one of the most beautiful temples representing a unique experiment in the field of architecture in Orissa.
Set amidst the well maintained gardens, the 11th century Rajarani Temple bhubaneshwar is famous for its sculpted figures and the successive tiers of projections rising to form its 18 m tower. The accentuating miniature replicas of itself decorate the spire, reminiscent of the temples of Khajuraho. It has a square sanctuary and its interior and exterior surfaces are so recessed that it appears circular.
The Rajarani takes its name from the local sandstone used to build it. The temple no longer has an image of the deity in the sanctuary but its strong Saiva associations are testified from the figures of Shiva and his consort Parvati on the platform and Saiva doorkeepers.
Source
http://www.visitodisha.net/rajarani-temple.html
http://www.beontheroad.com/2010/07/rajarani-temple-kalinga-episode.html#
https://thegr8wall.wordpress.com/2015/11/12/east-india-travel-1-bhubaneswar/
https://media-cdn.tripadvisor.com/media/photo-s/0a/69/50/ce/garden.jpg
http://theyoungbigmouth.com/2017/02/08/about-rajarani-temple-in-odisha-and-a-few-others/