Aligarh Fort (Hindi: अलीगढ़ क़िला, Urdu: علی گڑھ قلعہ‎ Aligarh Qila) also known as "bohne chor ka qila"(english-small thief's fort,is one of the strongest forts in India, is located in the city of Aligarh (The city was earlier named as Kol or Koil), Uttar Pradesh. It is also called "Aligarh Qila". It is situated on the Grand Trunk road and consists of a regular polygon, surrounded by a very broad and deep ditch.