Since Vishnu resides here in a reclining position, and is surrounded by rivers, the temple is called as "The Srirangam of Chera Kingdom".

The Adikesava temple is also where Chaitanya Mahaprabhu, founder of the Gaudiya Vaishnava movement, discovered the lost manuscript of the Brahma Samhita.

The adjacent forward facing mandapams includes sculptures and art works which depicts events from Ramayana.

As per the stone inscriptions in the pedestal of the flag mast it was renovated by Sree Moolam Thirunal Rama Varma VI in 1071 KE.

The epic scenes Vinayaka Kalyanam, Bharata War and deities Varuna, Niriyati, Yama, Kubera, Indra, Agni, Brahma and Monks in penance are sculpted in a row above the Mandapam.

A secret passage leading to the Palace is found beneath the west of the inner prakarams which is covered with a large stone slab.

The main deity was originally covered with gold kavachams in which diamonds and other precious stones were embedded which the Kerala kings had presented to the temple.

Marthanda Varma was a staunch devotee of Lord Adikesava and used to worship at the temple before all the major war campaigns undertaken by him.

The presiding Deities of Thiruvananthapuram and Thiruvattar had a deep connection which reflects in the quantitative measurement of commodities utilised etc.

The strong affiliation of the Venad kings to both Thiruvattar and Thiruvananthapuram temples in their privileges and responsibilities provide ample evidence of enduring interconnections.

[2] On 10 June 1741, Anizham Tirunal Marthanda Varma, the then ruler of Travancore, before going for the Battle of Colachel offered 908 panams, yataghan, and silk on the feet of Lord Adikesava and prayed for victory.