Trincomalee is sacred to Sri Lankan Tamils and Hindus around the world. The city has many Hindu sites of historical importance. These sites are sacred to the Hindus and some Buddhists also worship at these Hindu sites.
Prominent sites include the Koneswaram temple compound, its Bhadrakali temple on Konesar Road, and the Salli Muthumariamman Kovil of Uppuveli beach in the Trincomalee suburb of Sambalativu.
The Koneswaram temple, with a recorded history from the 3rd century BCE and legends attesting to classical antiquity attracted pilgrims from all parts of India. The shrine itself was demolished in 1622 by the Portuguese (who called it the Temple of a Thousand Columns), and who fortified the heights with the materials derived from its destruction. Some of the artifacts from the demolished temple were kept in the Lisbon Museum including the stone inscription by Kulakottan (Kunakottan). The site's ruins include an emblem including two fish and is engraved with a prophecy stating that, after the 16th century, westerners with different eye colours will rule the country for 500 years and, at the end of it, rule will revert to the northerners (Vadukkus. The Hindu temple was also documented in several medieval texts such as the Konesar Kalvettu[10] and the Dakshina Kailasa Puranam.