Rāma is no where worshipped as a villain.

But Rāvaṇa is worshipped by Hindus in some parts of India, Sri Lanka, Bali, and SE Asia, because He is considered to be the most revered devotee of Śiva. Images of Ravana are seen associated with Shiva at some places. There are some Śiva temples where Rāvaṇa is worshipped.

Places related to Rāvaṇa worship.

• Bisrakh Rāvaṇa Temple, Delhi NCR

The birthplace of Rāvaṇa, a temple in Bisrakh, Greater Noida in UP(India), is dedicated to the Laṅkā king. The temple has faced the wrath of several Hyper-Rāma Devotees

Bisrakh Rāvaṇa Temple

While the rest of India celebrates the death of Rāvaṇa by Rāma, on VijayaDashami(Dussehra), the people of this village perform Yajñas and MahāYajñas to mourn Rāvaṇa's death.

• Dashanan Ravana Temple, Kanpur, Uttar Pradesh.

This temple in Kanpur reportedly opens its doors just on the occasion of Dussehra, which is when believers of Ravana swarm it and pay homage to their hero. Built in the Shivala area of Kanpur, the temple is situated right next to a Shiva temple and is said to celebrate Ravana's knowledge and strength.

Devotees offering Ārtī to Rāvaṇa at the temple

The idol of Dashanan(10 headed) Rāvaṇa at the temple.

• Ravangram Ravana Temple, Madhya Pradesh

With an entire village dedicated to Rāvaṇa, the city of Vidisha, Madhya Pradesh has a set of devout Rāvaṇa worshipers. Vidisha's Ravangram has a Rāvaṇa temple with a 10-foot-long reclining statue of the Laṅkā king. The temple is said to be the built by Kanyakubja Brahmins--the sect of Brahmins Rāvaṇa is believed to be a part of. The residents of the village neither burn effigies nor celebrate Dussehra; they in fact turn to 'Lord Lankesh' and include him in every joyous occasion there is.

It is said that if the statue in Vidisha temple was to stand, a huge calamity would strike the village.

The graffiti on the wall says “Jai Rāvaṇa Bābā”, which means “Hail Rāvaṇa”. ‘Bābā’ is used to address male elders, ascetics, Saints and grandfather or father.

• Kakinada Rāvaṇa Temple, Andhra Pradesh

Situated in the coastal city of Andhra Pradesh, a Rāvaṇa temple here celebrates the Laṅkā king's admiration for Lord Śiva--as is evident by a gigantic Shivling mural. The temple is built on a site believed to have been chosen by Rāvaṇa himself. Rāvaṇa chose the spot to create a temple of Lord Śiva, whom Rāvaṇa believed in. It is believed that Ravana built the temple around the statue of Śiva. The temple is located close to the beach and is quite a picturesque temple. It is magnificent and beautiful!

At Kakinada's Ravan Mandir, The Laṅkā King and Lord Shiva co-exist.

• Mandsaur, Madhya Pradesh

Another of Rāvaṇa’s temples in Madhya Pradesh, this one is said to be important as Ravana and Mandodari are said to have wed here. So Rāvaṇa is respected as the ‘son-in-law’ here. The temple is an elaborate structure. Along with Rāvaṇa, there are also other female deities who are present inside the temple and are worshipped. Texts in the script from Harappan civilisation is found next to the deities indicating that the temple is extremely old. On Dussehra, people mourn the death of Rāvaṇa and hold prayers.

a 35-foot tall statue of Rāvaṇa in Mandsaur

• Mandor, Jodhpur Rajasthan

Dave brahmins of Mandor are believed to be direct descendants of Rāvaṇa. As descendants of Ravana, they do not celebrate Dussehra as on that day Rāma killed and vanquished Rāvaṇa. Instead, they perform Śrāddha and offer Pind Dāna on Dussehra. They perform all the rituals of Śrāddha that a son performs for his father/ancestors and pray for the liberation of his soul. A Rāvaṇa temple has been set up in Jodhpur India where daily, the king is prayed and worshipped.

Mandor Rāvaṇa Temple

• Mandya and Kolar, Karnataka

There are many Temples of Lord Śiva where Rāvaṇa is also worshipped for his unfathomable devotion for Lord Śiva. During the harvest festival, Laṅkādhipati (The King of Laṅkā) is worshipped by people of Kolar District in Karnataka. In a procession, alongwith Lord Śiva’s idol, a ten-headed (Dashanan) and twenty-armed idol of Rāvaṇa is also worshipped by locals. Similarly at Malavalli Taluka in the Mandya District of Karnataka, a temple of Rāvaṇa is visited by Hindu devotees to honor his dedication for Lord Śiva.

• Gadchiroli, Maharashtra

The Gond Tribals of Gadchiroli, Maharashtra worship Dashanan - Rāvaṇa and his son Meghanāda as Gods. The tribals extend adulations to Rāvaṇa during a tribal festival – Phālguna. As per Gond Tribals, Rāvaṇa was never demonized in the Vālmīki Rāmāyaṇa and Sage Vālmīki clearly mentioned that Rāvaṇa did not do anything wrong or maligned Sītā. It was in Tulasīdāsa Rāmāyaṇa that Rāvaṇa was considered a cruel king and devilish.

• Baijnath, Kangra in Himachal Pradesh

Ravana Dahan is also not observed in the beautiful district of Kangra in Himachal Pradesh. There's a Śiva temple where there's a giant footprint near the Śiva-Liṅgaṃ, its believed Rāvaṇa did Tapasyā here standing on one foot. In the Eastern side of the temple there's a Havana Kuṇda, where it's believed that Rāvaṇa offered his 9 heads to Śiva, which appeased the Lord. Śiva granted him boons here. Hence, Ravana is revered as a great devotee of Lord Shiva.

Baijnath Temple

Its believed that whoever burns Rāvaṇa's effigy in this area, will die.

• Koneshwaram Temple, Śrī Laṅkā

Dhen-Dakshina Kailasam is a classical-medieval Hindu temple complex in Trincomalee, a Hindu religious pilgrimage centre in Eastern Province, Sri Lanka. These temples are associated with Rāvaṇa and his mother. They had worshiped Śiva at the shrine.

Rāvaṇa holding the Kailasa Mountain, statue at koneshwaram Temple

Description of the statue at the temple,

“Rāvaṇa is a great scholar, a capable ruler, a player of the veena and a devoted follower of Śiva, and he has his apologists and staunch devotees within the Hindu traditions”

• Kanniya Hot water spring(Tapta-Kuṇda), Śrī Laṅkā

The Kanniya Hot Springs is a site with hot wells located in Trincomalee, Sri Lanka It's believed that King Rāvaṇa stuck the earth with his sword in several spots for his mother's funeral event and several fountains were started on those places. The water was hot and it is now a tourist & pilgrimage point in Sri Lanka.

Hot water wells at Kanniya

• Wat Phra Kaew Temple, Thailand

Rāvaṇa is called Totsapak or more popularly Totsakan in Thai. Totsapak is derived from the Sanskrit name, Dashamukha(one with ten faces) & Totsakan, from Dashakaṅṭha ("one with ten necks).

Thotsakan's sculpture as a guardian of Wat Phra Kaew, Thailand

The Sachora Brahmins of Gujarat claim descent from Rāvaṇa and sometimes have Ravan as their surname.

Footnotes