Hyderabad was historically known as a pearl and diamond trading centre,
and it continues to be known as the City of Pearls. Many of the city's
traditional bazaars, including Laad Bazaar, Begum Bazaar and Sultan
Bazaar, have remained open for centuries.
throughout the 20th century has also attracted major Indian
manufacturing, research and financial institutions, including the
Bharat Heavy Electricals Limited, National Geophysical Research
Institute and the Centre for Cellular and Molecular Biology.
economic zones dedicated to information technology have encouraged
companies from across India and around the world to set up operations
and the emergence of pharmaceutical and biotechnology industries in the
1990s led to the title of "Genome Valley". With an output of US$74
billion, Hyderabad is the fifth-largest contributor to India's overall
gross domestic product. wikipedia