Question: in bihar unesco has declared which place as a world heritage site
Answer: Nilgiri Mountain Railway ( 2005 ) Ooty , Tamil Nadu , India Kalka - Shimla Railway , Himachal Pradesh ( 2008 ) India 23 Mahabodhi Temple Complex at Bodh Gaya , Bihar Bihar , India 3rd century BC , 5th and 6th century AD and 19th century 1056 rev ; 2002 ; i , ii , iii , iv , vi Mahabodhi Temple Complex at Bodh Gaya ( Buddha Gaya ) , spread over an area of 4.