A thousand-year timeline.

Brihadeeswara is the rarest of medieval Indian monuments: a temple whose entire timeline, from its consecration in 1010 to its 2025 conservation schedule, can be reconstructed from a continuous documentary record. Inscriptions, copper-plate grants, colonial surveys, ASI files, UNESCO dossiers — the paper trail does not break.

Most of that record concerns custodianship: which power claimed the temple, who paid its priests, who lit its lamps. Five major regimes have held formal responsibility for the building since 1010 — Chola, Pandyan, Vijayanagara-Nayak, Maratha and modern Indian — and each left some trace.

The Chola period.

The temple was consecrated in 1010 CE in the twenty-fifth regnal year of Raja Raja Chola I. He died four years later. His son Rajendra Chola I — who would in 1025 launch the Srivijaya expedition and become the only Indian king to project naval power across the Bay of Bengal — confirmed all of his father's endowments and added a hundred-odd of his own. The temple flourished as a fully imperial establishment for the rest of the eleventh century.

Through the late Chola period (1070 – 1279) the temple's patronage continued unbroken. Kulottunga I, Vikrama Chola, Rajaraja II, Rajadhiraja II and the later kings all left endowment inscriptions on the plinth. The administrative habit of carving state acts onto temple walls produced, by the dynasty's end, a body of 107 distinct inscriptions on Brihadeeswara alone.

Pandyans and the late Cholas.

The Chola dynasty fell in 1279 to the resurgent Pandyans under Maravarman Kulasekara I. Pandyan rule over Thanjavur lasted approximately half a century. The Pandyan kings continued to fund the temple — there are several Pandyan donative inscriptions — but their main capital was at Madurai, and Thanjavur became, for the first time in three hundred years, a provincial centre.

The early fourteenth century brought the Delhi Sultanate raids of Malik Kafur (1311) and Ulugh Khan (1323). Brihadeeswara was not destroyed — there is no inscription recording damage of consequence — though there is some scholarly debate about whether the original gold finial at the kalasam was removed in this period.

Vijayanagara and Nayak.

From the mid-fourteenth century until the late seventeenth the Tamil country was held by the Vijayanagara empire and its Nayak feudatories. The Thanjavur Nayaks (1532 – 1673) are the period's most visible custodians at Brihadeeswara. Their major intervention is in the painting program: most of the surface murals visible today in the ambulatory are Nayak-era overpaintings, applied directly over the eleventh-century Chola frescoes that survive beneath them.

Other Nayak additions include the eastern gopuram (an entrance gateway that postdates the Chola original), several pavilion structures in the outer courtyard, and the elaborately carved Subrahmanya shrine — a free-standing temple within the precinct, completed under Achyutappa Nayak in the late sixteenth century.

Maratha custodianship.

In 1673 the Maratha general Venkoji, half-brother of Shivaji, took Thanjavur from the Madurai Nayaks. The Bhonsle line of Marathas held Thanjavur for the next 182 years — until 1855, when the British annexed the kingdom under the doctrine of lapse. The Maratha period produced the Saraswathi Mahal Library, the present palace complex, and the famous Thanjavur painting school. At Brihadeeswara it produced two substantial contributions: the Maratha mandapa added in the outer courtyard, and an extensive eighteenth-century repainting of the inner sanctum walls.

Under the Marathas the temple continued to function as the principal Saiva shrine of the kingdom, with daily worship maintained from royal endowments. Serfoji II (r. 1798 – 1832) — the great library-builder and patron of letters — is the most visible single Maratha patron on record.

The colonial survey.

The British administrative interest in the temple began with Colin Mackenzie's survey of the South Indian temples in 1808 – 1814 and continued through the founding of the Archaeological Survey of India in 1861. The first detailed measured drawings of the vimana were made by James Burgess in the 1880s; the first complete photographic record was the 1933 ASI survey conducted by S. R. Balasubrahmanyam.

In 1933 the ASI conservator F. H. Gravely's team also discovered, during cleaning of the inner ambulatory walls, that the Nayak-era murals were applied over older paintings. The earlier layer — the surviving eleventh-century Chola fresco program — was documented in a series of campaigns between 1933 and 1953.

UNESCO and after.

Brihadeeswara was inscribed on the UNESCO World Heritage List in 1987 as a stand-alone property. In 2004 the site was extended to include Gangaikonda Cholapuram (1035) and Airavatesvara at Darasuram (1166), and renamed the “Great Living Chola Temples”. The group is one of the few World Heritage properties whose “living” status — continuous functioning religious use over a thousand years — is part of its formal Outstanding Universal Value.

The millennium year.

2010 marked the temple's thousandth year. The Tamil Nadu state government and the ASI ran a multi-year millennium conservation programme between 2007 and 2012, beginning with Pierre Pichard's structural recommendations of 1995 and extending to full photogrammetric documentation of the vimana exterior. The 2012 ASI survey is the authoritative measurement source for the temple's dimensions as quoted in modern editorial work.

Today

The temple is administered by the Hindu Religious and Charitable Endowments Department of the Tamil Nadu government, with structural conservation under the ASI. Daily worship continues on the six-pooja schedule fixed by the Agamic texts; the major annual festival is Maha Shivaratri, in February or March, when the temple stays open through the night and the procession deity is carried out into the courtyard.

Visitor numbers are now in the millions a year — somewhere between 1.5 and 2.5 million annual visitors as of the most recent state tourism figures. The temple is free to enter, open daily from 06:00 to 12:30 and again from 16:00 to 20:30, and remains the single most-visited monument in Tamil Nadu after the Meenakshi temple at Madurai.