25 interesting facts.

The temple has been the subject of inflated claims for at least a century. The shadow never falls; the walls are sixty centimetres thick; no quarry is within sixty kilometres; the kalasam weighs two hundred tonnes. None of those is quite right. The facts that are right are interesting enough on their own.

Twenty-five of them, below. Each is checkable against the temple inscriptions, the Archaeological Survey of India's 1995 photogrammetric survey, or the standard scholarly literature. Where a fact is contested we note it. Where it is just an old rumour we leave it out.

Scale and engineering.

1. The vimana is sixty-six metres tall — the tallest religious structure of its century anywhere in the world.
2. The tower is built of thirteen receding storeys of dressed granite, in the classical Dravidian pyramidal type.
3. The temple was completed in 1010 CE, in the twenty-fifth regnal year of Raja Raja Chola I. The dedication is dated on the plinth in his own inscription.
4. The building took approximately seven years to construct, from c. 1003 to 1010 — making it the most documented major building project of medieval India.
5. The whole structure has settled uniformly by about sixty centimetres over a thousand years — extraordinary for a granite tower on sand foundation. The uniformity is the engineering achievement.

The stone itself.

6. The temple is built entirely of granite — chosen, in a region of available sandstone, for permanence rather than ease of carving.
7. The nearest quarry is about sixty kilometres west, at Pachaimalai. The popular claim of “no quarry within sixty kilometres” is half right; the quarry was found, mapped and confirmed by the Geological Survey of India in the 1970s.
8. The lingam in the sanctum is 3.7 metres tall, the largest in any Chola shrine and one of the largest stone lingams in India.
9. The monolithic Nandi bull in the forecourt is about six metres long and carved from a single granite block — second in scale only to the Lepakshi Nandi in Andhra Pradesh.
10. The two principal dvarapalas (guardian deities) at the entrance to the sanctum are over five metres tall, also monolithic.

The kalasam.

11. The kalasam, the crowning finial of the vimana, is a single granite block weighing approximately eighty tonnes. (The often-quoted figure of two hundred tonnes is a tabloid number; the physically credible weight is closer to eighty.)
12. It was raised sixty-six metres into position. The standard explanation is a six-kilometre earthen ramp built from a nearby village whose name — Sarapallam — means “scaffolding hollow”.
13. The kalasam is hollow at the centre and houses, by tradition, a deposit of gold, silver, gemstones and ritual implements interred at consecration.

Inscriptions and records.

14. The plinth of the temple carries 107 distinct inscriptions, covering approximately 64,000 square centimetres of granite.
15. Most of the inscriptions are administrative records — donor lists, land endowments, tax assessments, worker payments — not religious texts. The temple is a state archive that happens to be a temple.
16. The base inscriptions name 400 devaradiyars (temple dancers) by personal name and home village, the most thorough such roster surviving from medieval India.
17. They also name 212 musicians, dozens of accountants, goldsmiths, gardeners, and the precise endowments by which each was supported in perpetuity.
18. The inscriptions are in Tamil and Sanskrit, in Tamil-Brahmi and Grantha scripts. The Tamil portions are administrative; the Sanskrit portions are liturgical.

Worship and ritual.

19. The temple performs six daily poojas, on a schedule essentially unchanged for a thousand years. Two are at dawn, one at midday, and three through the evening.
20. Entry is free for all visitors. There is no ticket counter and no charge of any kind, contrary to occasional online rumour. The temple is administered under the Tamil Nadu HR&CE department and supported by its endowments.
21. The temple remains in continuous Saiva worship under the Saiva Siddhanta tradition — unbroken from 1010 through Pandyan, Vijayanagara, Maratha, British and Republican Indian administrations.

Modern records.

22. The temple was inscribed by UNESCO in 1987 as a stand-alone World Heritage Site. The 2004 extension added Gangaikonda Cholapuram and Airavatesvara to create the “Great Living Chola Temples” group.
23. The Reserve Bank of India issued a commemorative ₹1,000 silver coin in 2010 to mark the temple's thousandth anniversary — the highest denomination commemorative coin in independent Indian history.
24. The temple was the subject of a photogrammetric survey by Pierre Pichard in 1995, published by the École française d'Extrême-Orient. The survey is the standard reference for the building's precise dimensions.
25. The ASI completed a comprehensive millennium conservation programme between 2007 and 2010 — the most thorough re-survey of the temple since the building was finished.

On one page.

The temple is large, old, well-built, and thoroughly inscribed. It was the most ambitious building project of its century, and the records of its construction survive on its own walls. It is also still in worship — which is to say, it is not an archaeological ruin but a working religious institution that has been operating for more than a thousand years.