Rajgir is the best place to visit in bihar.i have visited Rajgir 3 years ago.Ragir is the one of them historical place in bihar.Rajgir is very near to patna and Bodh gaya.i liked Rajgir very much.Tthere were some hotels in Rajgir but no any airport is availabe in rajgir.There is a international airport in Bodhgaya.Climate was same as delhi climate.Rajgir is very famous because Buddha first visited to rajgir before to bodhgaya.there were many trains from patna to rajgir. I recommend you to visit rajgir.