Hello Mr Raja,
You have given nice topic for discussion. Orissa is full of tourists places and Jagannath Temple of is one of the most visited places in Orissa. So I have voted to Jagannath Temple. As told by Mr Lokesh, Konark temple is also very famous for its art work but in Puri temple you can also see the great art and culture of Orissa.
Previously the arts in puri temple were covered by just like white cements cause it was near the sea and for making the stone works safe from the salty whether.
Now a days if you ever visit Puri then you can see the great stone works there like Konark. Orissa Govt as well as India Govt taking necessary initiatives to make this great temple safe and beautiful.
Bhisma Narayan Rout