The Allahabad Fort is the largest fort built by Akbar. In its prime, the fort was unrivalled for its design, construction and craftsmanship. This huge fort has three galleries flanked by high towers. In 1798, the fort was captured by The East India Company.
At present, the fort is used by the army and only a limited area is open to visitors. The outer wall is intact and rises above the water's edge. Inside the fort there is the Zenana, Palace of Mariam-uz-Zamani and the 3rd century BCE Ashoka pillar. The Saraswati Koop, said to be the source of the Saraswati river, and the Patalpuri temple are also here.
Allahabad Fort is the location of the much revered Akshayavat or "immortal tree". Legends say that if anyone jumps from this centuries-old banyan tree, he will attain immortality. Civilians are not allowed to see this tree. It is near the southern wall and is one among many trees that can be seen from outside the southern wall of the fort.