Built in 1868 on the site of the original Fort William – destroyed by Siraj-ud-Daula in 1756 – the GPO on the west side of the square hides the supposed site of the Black Hole of Calcutta. On a hot June night in 1756, 146 British prisoners were forced by Siraj-ud-Daula’s guards into a tiny chamber with only the smallest of windows for ventilation; most had suffocated to death by the next morning. By all accounts, the guards were unaware of the tragedy unfolding and, on hearing the news, Siraj-ud-Daula was deeply repentant. A memorial to the victims that formerly stood in front of the Writers’ Building was moved in 1940 to the grounds of St John’s Church, south of the GPO.

Book through Rough Guides’ trusted travel partners

India features

The latest articles, galleries, quizzes and videos.

Budget trips: 20 of the cheapest places to travel

Budget trips: 20 of the cheapest places to travel

That ever-growing travel wish list might be putting some pressure on your pocket – but there are plenty of destinations where you'll get more bang for your b…

11 Oct 2017 • Emma Gibbs camera_alt Gallery
19 places to get utterly lost

19 places to get utterly lost

One of the great joys of travelling is stumbling across unexpected places, wandering without a single destination in mind and embracing the journey. These place…

12 Sep 2017 • Keith Drew camera_alt Gallery
The most beautiful country in the world – as voted by you

The most beautiful country in the world – as voted by you

There's nothing like an amazing view to inspire you to book your next trip, whether you're drawn by rolling countryside, isolated islands or soaring mountain …

30 Aug 2017 • Rough Guides Editors camera_alt Gallery
View more featureschevron_right

Weekly newsletter

Sign up now for travel inspiration, discounts and competitions

Sign up now and get 20% off any ebook