Brihadisvara Temple, also known as the Brihadeeswarar Temple or Peruvudaiyar Kovil, is located in the Indian state of Tamil Nadu. It is situated in the city of Thanjavur, which was once the capital of the Chola dynasty in the 11th century.

- Historical Significance:
The Brihadisvara Temple was built by the Chola king Rajaraja I in the early 11th century to honor Lord Shiva. It is a prime example of Dravidian architecture and is considered a masterpiece of the Chola dynasty. The temple is dedicated to Lord Brihadeeswarar, an incarnation of Lord Shiva, and also houses several other deities and shrines.

- Architectural Marvel:
The Brihadisvara Temple is renowned for its exquisite architecture and grandeur. The main temple tower, known as the vimana, is one of the tallest in India, standing at around 63 meters (207 feet) high. It is made entirely of granite and is adorned with intricate carvings and sculptures depicting various mythological stories and religious themes.

- UNESCO World Heritage Site:
In recognition of its historical and architectural significance, the Brihadisvara Temple was designated as a UNESCO World Heritage Site in 1987. It is considered a masterpiece of Tamil architecture and a symbol of the cultural heritage of India.

- Temple Complex:
The temple complex is spread over an area of around 29 acres and consists of several structures, including the main temple, various mandapams (halls), shrines, and a large courtyard. The entrance to the temple is marked by a massive stone gateway known as the gopuram.

- Festivals and Celebrations:
The Brihadisvara Temple is a place of worship and pilgrimage for devotees of Lord Shiva. It attracts a large number of visitors, especially during important Hindu festivals such as Maha Shivaratri, Annabhishekam, and Arudra Darshanam. These festivals are celebrated with great pomp and devotion, featuring special rituals, processions, and cultural performances.

In conclusion, the Brihadisvara Temple, a magnificent architectural marvel, is located in the Indian state of Tamil Nadu. It holds immense historical and cultural significance and continues to be a revered place of worship for devotees of Lord Shiva.