There are 12 Jyothirlinga temples and 5 Panchabootha sthalams in India.
Jyothirlinga temples are those where Lord Shiva is worshiped in the form of light (jyothi) and also in the Linga form. On the night of Aridra Nakshatra, lord Shiva transformed himself in the form of Jyothi linga.
The twelve Jyotirlinga Temples are:
1. Kedarnath Temple at Uttranchal
2. Viswanath Temple at Kasi (Varanasi)
3. Someshwara Temple at Somnath
4. Mahakaleshwar Temple at Ujjain
5. Omkareshwar Temple at Ujjain
6. Rameshwar Temple at Rameshwaram
7. Mallikarjuna Temple at Srisailam
8. Triambakeshwar Temple at Nashik
9. Bhimashankar Temple at Pune
10. Nageshwar Temple at Dwaraka
11. Baijnath Temple at Deoghar
12. Grishneshwar Temple at Ellora
Pancha Bootha Sthalams are temples of Lord Shiva, where he is worshiped in the form of the 5 aspects of the universe, earth, water, air, sky and fire.
The Panchabootha sthalams are:
1. Earth- Sri Ekambareshwarar Temple at Kanchipuram
2. Water - Sti Jambulingeshwar Temple at Thiruvanaikovil
3. Air - Sri Kalahastheeshwarar Temple at Kalahasthi
4. Sky - Sri Nataraja Temple at Chidambaram
5. Fire - Sri Arunachaleshwarar Temple at Thiruvannamalai