One of the largest and wealthiest of India's former princely states, Hyderabad built its fortune on the trade of pearls, gold, steel, fabric and, above all, diamonds, which some believe remain hidden beneath the foundations of Golconda Fort, precursor to the city some 10km (6 1/4 miles) away. Once the most famous diamond mining area in the world, Golconda was where the 108-carat Koh-i-Noor diamond (not to mention the Orloff, Regent, and Hope diamonds) was excavated. It was in fact Golconda's legendary wealth that attracted the attention of the voracious Mughal emperor Aurangzeb, and with the aid of an inside agent he captured the fortress in 1678. Aurangzeb's invasion marked the temporary decline of the city, but when the Mughal empire began to fade, the enterprising local viceroy, Asaf Jah I, promptly proclaimed himself Nizam (ruler) and established independent rule over the Deccan state. Under the notoriously opulent Nizams of the Asaf Jahi dynasty, their power cemented by an alliance forged in 1798 with the British East India Company, Hyderabad again became a major influence, and even contributed to the British military campaigns against the recalcitrant Tipu Sultan of Mysore.

Hyderabad is more than 400 years old, but today the state capital of Andhra Pradesh is as famous for its burgeoning information technology and biotech research industries as it is for its minarets. Like Bangalore, this is one of India's fastest-growing cities (with a projected population of 7.5 million by 2015), but unlike most Indian cities, Hyderabad is actually getting greener and cleaner. A substantial part of the city is the suburb of Cyberabad, where Microsoft and Oracle are but two major players in the development known as Hi-Tech City, responsible for the city's economic upswing.

Despite its newfound attractiveness as a business destination, the city remains steeped in history, and you're just as likely to share the road with camels and bullock carts, and haggle alongside Muslim women covered from head to toe in black burkhas, as you are to converse with cellphone-wielding yuppies. There may not be much by way of specific sights to see in Hyderabad, but it's a pleasantly manageable city with a vibrant culture, excellent-value luxury hotels, and a heavenly cuisine -- perhaps the most enduring legacy of the decadent tastes and patronage of the cultured Nizams who first put the city on the map.

Rich Man, Poor Man--The Nizams of Hyderabad may have been ousted from power two generations ago, but their decadent tastes have only now been curtailed. Mukkaram Jah, grandson of the seventh and last Nizam of Hyderabad, is said to have inherited the richest fortune in the world when his grandfather died in 1967. Thirty-eight years later, he lives in Turkey, all but bankrupt, his wealth -- once said to have been worth around $750 million -- squandered by a lavish lifestyle (including four expensive divorces) or stuck in banks around the world pending the settlement of innumerable legal disputes and claims from hundreds of family members (real and fake) determined to get their pound of flesh.