What are some of the best kept secrets of Hyderabad? by @GabbarSanghi
Answer by Ratnakar Sadasyula(రత్నాకర్ సదస్యుల):
PS: I have updated this answer, with some more trivia and pictures to make it more interesting.
First things first the city was developed by Quli Qutub Shah, and was patterned after the Iranian city of Isfahan. While Secunderabad gets it's name from Sikandar Jah, the 3rd Asaf Jahi Nizam, and was founded as a British cantonment, in 1806.
A.S.Rao Nagar is named after the founder of ECIL, it is now the fastest growing suburbs in Hyderabad.
The Nizam had a cavalry of African guards, who were given quarters to stay, that area is now called A.C.Guards.
Albert Abid was a Jewish valet of the Nizam, who owned a shop, the surrounding area was named Abids after him, and is now one of Hyderabad's major commercial centers. The GPO is also located here, as well as some of Hyderabad's leading schools too.
Afzalgunj gets it's name from the 5th Nizam Afzal Ud Daulah, who gifted the land to grain merchants here. Now a bustling market place, it is home to State Central Library which has around 17,000 manuscripts dating back to ancient, medieval times. The famous Salarjung museum is also close by.
Aghapura, houses the HQ of the MIM party and is named after Agha Muhammed Dawood the disciple of the Sufi Saint, Abul Ulai.
Alwal gets it's name from the Alwars who settled down here, most of them were devoteess of Lord Venkateswara. The place is famous for it's large Venkateswara Temple, noted director Shyam Benegal is a resident of this area.
Amberpet lying adjacent to Osmania University gets it's name from Hazrat Amber Baba, a famous Sufi saint, whose dargah to date draws a lot of devotees.
Ameerpet gets it's name from Amir Ali, a jagirdar of the Nizam who was gifted the land here. The Nizamia Observatory here was the 3rd such to be setup in India. It is right now famed for it's computer training centers, shopping complexes and shops.
Barkas in the Old City area gets it's name from the fact that it housed military barracks of the Nizam. This place was where the Arab soldiers and bodyguards of the Nizam used to stay, even now their descendants the Chaush, make up a bulk of the population here.
Basheerbagh located in the heart of Hyderabad, Bashir-ud-DauIa Bahadur, a senior noble belonging to the Paigah aristocracy. The Paigah palace is located here too.
Begum Bazar gets it's name from Humda Begum, wife of Nizam Ali Khan Nizamul Mulk who gifted the land here to merchants for their trading activities. It has the 2nd largest fish market in Hyderabad, and the first Ganesh Puja pandal was set up here. Right now one of the major wholesale markets in the city.
Begumpet gets it's name from Basheer Ul-Unnisaa Begum, the daughter of the 6th Nizam who got this land as part of her wedding dowry, it is now one of the major commercial centers in Hyderabad, as well home to some IT firms too. Sir Ronald Ross discovered the cause of malaria, during his work at the Begumpet general hospital in 1897.
Bowenpally is one of the 3 villages that made up Secunderabad, the other two being Alwal and Tirumalgerry. It was named as Bhuvanapalli after Trailokya Bhuvaneswara,an ancient Chalukya ruler.
Chikkadapally gets it's name from the word Chikkad meaning mud, owing to the fact that mud often got deposited here from drain nalas. Has a very old Venkateswara Temple.
Darushifa gets it's name from the large hospital built here by Sultan Quli Qutub Shah, the word means Door to Health.
Dhoolpet was founded by migrants from Uttar Pradesh, who settled here during the Nizam's time. The area is famous for it's Ganesh Idols manufacture, as well as the illegal liquor joints here, a strange mix of crime and religion.
Dilsukh Ram Pershad a land owner near Malakpet subdivided his land into plots and one of them was Dilsukhnagar. Lying on the route to Vijayawada, it has become a bustling commercial hub, also home to many colleges, coaching institutes.
Domalguda, gets it's name from the fact that two wrestlers( Do Malla) lived here, the Ramakrishna Math is located here, and this lies next to Tank Bund.
Habsiguda is named after the Abysinnian guards of the Nizam who were locally referred to as Habsis, they settled here during that time.
Khairtabad is believed to be named after Khairun Nissa, the wife of Capt James Kirkpatrick, mentioned in the book White Mughals by William Dalyrmple. It is famous for the Khairatabad Ganesh, the largest one in Hyderabad during the Ganesh Puja.
Mehboob ki Mehndi, is the city's red light area. Located in old city, quite a notorious place, though closed down of late.
Gowliguda get's it's name from the fact that it was a village of Gowlis( milkmen), it used to have the hangars for the Nizam's private aircraft, now used as a bus repair workshop.
Agoranath Chattopadhyaya the father of Dr.Sarojini Naidu was the first principal of the Nizam College.
Fateh Maidan which houses the Old Cricket stadium, was used as a camping ground by the Mughal Army during their Siege of Golconda. After Golkonda fell to the Mughals, it was named as Fateh Maidan- Ground of Victory.
Bolarum was where Sardar Patel negotiated the terms of the Nizam's surrender with his general El Eldroos.has the Rashtrapati Nilayam, equivalent of the Rashtrapati Bhavan, serving as the official residence of the President, whenever he visits the South.
Hussain Sagar gets it's name from Hazrat Hussain Shah Wali, a renowned Sufi saint of Golkonda in the 16th century, who also built it for the city's water needs.
The Andhra Pradesh Secretariat, is partially housed in the Saifabad Palace, built by 6th Nizam, Mahbub Ali Kha
Niloufer Hospital was built on the request of Princess Niloufer, daughter in law of the last Nizam, she wanted a medical center that would take care of women in their pregnancy and childbirth stage. Niloufer incidentally was one of the last princesses of the Ottoman dynasty. She had also worked as a nurse during WWII.
The Yellama temple in Balkampet is believed to be dedicated to Parashuram's mother Renuka( Yellama), who apparently hid here, to escape being killed by her son. It is one of the main temples for Bonalu.
Tarnaka literally means "Wired Checkpost", it gets it's name from the fact that the place had a Telegraph Office( Tar) here and Naka meaning Checkpost.
Koti gets it's name from the fact that it was primarily a residence for the Nizam's concubines. The mansion used to house the concubines was later converted into a residence for Sir James Kirkpatrick, the lover of Khairunissa who married her.
Moazzam Jahi market or MJ Market was named after the second son Moazzam Jah of the last Nizam. Famous shopping center.