Nearest Town : Kumbakonam
District : Thanjavur
State : Tamil Nadu
The main deity is Kalyana Sundarar, Lord Shiva is
believed to have granted Sage Agasthyar a vision of
his marriage here. Behind the lingam are the images
of Shiva and Parvati shown getting married, with
Brahma performing the rites of marriage on the left,
and Vishnu, giving away his sister Parvati in
marriage, on the right.
The lingam itself is unique,
for it is made of an unknown material and changes
colours five times a day, and is thus also known as
Panchavarneswarar. The lingam has 3 portions – the
lower portion which joins the Avudaiyar, and is
smooth, the middle portion, which is rough, and the
top, which is again smooth, and is the most prominent
part of the lingam.
Each of these parts changes
colour every two and half hours.
Kunti the mother of the Pandavas bathed at the
Saptasagara theertham and so there is an image of
Kunti in the temple.
Following are the five colors it changes in a day
Light Red (the colour of sunrise)
Colour of molten gold
An indescribable colour
Source : anushankarn.sulekha.com