Chennai in issuing 'L' and 'H' category visas for workers and professionals and was ranked eighth globally in terms of all category of visas being issued. The Foreigners Regional Registration Office (FRRO), which is the office of the field officers in charge of immigration and registration activities in the city, is located at Shastri Bhavan at Haddows Road. Chennai has sister city relationships with the following cities of the world: Chennai Chennai (; also known by its former name Madras or ) is the capital of the Indian state of Tamil Nadu. Located on the Coromandel Coast off the Bay of
Architecture of Tamil Nadu Architecture of Tamil Nadu Tamil Nadu architecture that emerged thousands of years ago. The Pallavas ruled from AD (600–900) and their greatest constructed accomplishments are the single rock temples in Mahabalipuram and their capital Kanchipuram, now located in Tamil Nadu. Pallavas were pioneers of south Indian architecture. The greatest accomplishments of the Pallava architecture are the rock-cut temples at Mahabalipuram. There are excavated pillared halls and monolithic shrines known as rathas in Mahabalipuram. Mention must be made here of the Shore Temple constructed by Narasimhavarman II near Mahabalipuram which is a UNESCO World Heritage Site. The Chola kings ruled from