Golconda is a historic city located in the Indian state of Telangana. It is renowned for its impressive fort, which was built in the 12th century and served as the capital of the Golconda Sultanate. The fort is famous for its unique acoustic system, which allowed guards to communicate over long distances. The city is also known for its diamond trade, particularly during the 16th and 17th centuries. The Golconda diamonds, including the famous Koh-i-Noor and Hope Diamond, were mined in the region. Today, Golconda attracts tourists for its rich history and architectural marvels.