About the location (from Wiki):
One of the main attractions in Anna Nagar is the 138 feet (42 m) tall Annanagar Tower, officially known as the Visveswaraya Tower, built for the 1968 World Trade Fair, by B. S. Abdur Rahman. Its main entrance is from the 3rd Main Road. It is popular with morning walkers and joggers, and with families and young people in the evenings to play and relax. For a nominal fee one can walk to the top of the tower from where excellent views of the city can be seen. The tower and park are now renovated and has a skating rink. Currently, it boasts of a good turnout of children who come in for practicing their skills on roller skates. There is also a group of regulars who practice silambattam – an ancient Tamil martial art form – here. From atop the tower one can have a panoramic views, and the rapidly changing skyline of the city can be appreciated.

Movies shot at this location:
Nenjukkul Peidhidum Maamazhai from Vaaranama Aayiram
Climax fight scene from Walter Vetrivel
Ada Poya Poya song from Dharma Yudham
Engal Kalyanam song from Galatta Kalyanam