Not just one place but multiple places, here are few places which are famous for the Ravan temple. (source: Internet)
Ravana Mandir Bisrakh, Uttar Pradesh
Bisrakh village is situated in Greater Noida of Uttar Pradesh and believed to be birthplace of the king Ravana.
Dashanan Ravana Temple, Kanpur
On the occasion of Dussehra thousand of people worship Ravana at the Dashanan temple in Kanpur for the annual ritual.
Jodhpur Ravan Mandir, Rajasthan
Maudgil Brahmins in Jodhpur are descendents of Ravana and building a temple dedicated to the demon king in Jodhpur. The temple premise will house a Ravana temple having idols of Ravana.
Ravangram Ravana Temple, Madhya Pradesh
The people of Ravangram village worship Ravana and here lies an ancient 10 feet idol of Ravana in a reclining position which is worshiped by all the devotees.
Kakinada Ravana Temple, Andhra Pradesh
Kakinada is a city in Andhra Pradesh and the only place in the Andhra Pradesh where Ravana was worshipped. Here Ravana has been associated with Lord Shiva near by huge Shivalinga in Kakinada.