Hi Anuj, you can go Junagarh fort, gajner lake, Rampuria haveli, karni maa mandir, laxmi villas palace, Bikaneri Bujiwala factory, Naal, Bikaner border. :)
JUNAGARH FORT
NATIONAL RESEARCH CENTRE ON CAMEL
LALGARH PALACE AND MUSEUM
RAMPURIA HAVELI
LAXMI NIWAS PALACE
and various other famous temples in the city