Jayalalithaa inaugurated the World Tamil Sangam building, which has come up on 14.15 acres at Tallakulam, through video conferencing from Chennai.
Ramachandran, the founder of AIADMK, had laid the foundation stone for the project in 1986 and alloted the land for the purpose.
Tamil scholars in the city expected the Tamil Sangam to promote Tamil poets, thinkers and writers and uphold the legacy of the three ancient Tamil academies.
Madurai has been known as the centre of 'Muthamizh' (the three-forms of Tamil language -- Iyal (prose), Isai (music) and Nadagam (drama) since the Sangam age. It is also considered the epicentre of Tamil development activities.
Jayalalithaa also laid the foundation of four laning of the ring road and two railway over bridges.