Thirumalai Thirupathi Devasthanam Temple is a busy Chennai temple dedicated to Lord Venkatachalapathi and maintained by the Tirumala Tirupati Devasthanams. It draws large numbers of devotees, especially on weekends, and gives visitors a chance to see an active urban temple rather than a quiet monument.
Expect crowds on Saturdays and Sundays. The temple also has a bookstore, and visits are best kept unhurried so you can follow the flow of worshippers respectfully.