Indira Nagar station - a building so vast and ugly it gives brutalism a bad name - is now a riot of colour and hope. It features the largest panoramic mural in India, or at least it was the largest when unveiled two years ago.
The wall painting stretches over 63,000 square feet and features five huge faces - or rather, split faces because each face is a composite of two similarly sized but mis-matching half faces.
This spectacular piece of public art also has a noble purpose - to tackle the stigma so often faced by those living with HIV. It combines the portraits of those with the virus and those without.
But of course you can't tell the difference. That's the point. We are all the same.
I suspect that most of those who drive by don't get the HIV message. But they do get the majesty of such kindly, everyday faces looking out on one of Chennai's busiest highways.
And a shout-out for the artists - the Chennai-based street artist A-Kill and Khatra from Delhi.
I can't think of a more ambitious and effective piece of public art.
Andrew Whitehead's blog
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