I went for a long weekend to Hyderabad with Jenni. While it's now a booming cyber-city, it has a very long history and that was what we were mostly concerned with.
On the morning of our first day in Hyderabad we went to the Golconda Fort, which was once the capital of the medieval sultanate of the Qutb Shahi dynasty. The fort area is huge. It's full of pavillions, gates, entrances, mosques and domes.
The fort used to have a vault where the Koh-i-Noor diamond was stored, along with other diamonds.