Out of the forts listed, the one that was not built by Akbar is option 1, Gwalior Fort. Akbar, who was the Mughal Emperor, is known for constructing several significant forts during his reign. However, Gwalior Fort predates Akbar`s time and was constructed much earlier by the Tomar dynasty in the 8th century. Gwalior Fort is located in Madhya Pradesh and is renowned for its architectural marvels and historical importance. Although Akbar did make some additions and improvements to the fort, he cannot be credited with its original construction. Therefore, the correct answer is option 1.