srisailam: It is located in Andhra Pradesh, one of the Famous 12 Jyotirlingas and is completely surrounded forest.
Ramanathaswami temple: It is located in Tamilnadu, also one of the jyotirlingas, famous for it's architecture, and it's beautiful gopuram structure.
Chidamabram: Dancing form of Shiva, where shiva can't be seen in linga form is located in Tamilnadu
Brihadishwara Temple: Materpeice of architechture, UNESCO world heritage is also located in Tamilnadu.
Shore Temple: Located in Mahabalipuram, Tamilnadu, it was a seaport once, and also UNESCO site and is one of the ancient temples.