A travel guide for Prayagraj highlights the Allahabad Fort, also known as Akbar Fort, built by Emperor Akbar in 1583. Located by the Yamuna River, this historically significant Mughal fort is now under Indian Army control, with limited access for visitors. Inside, tourists can view structures like Zenana, Jodhabai Palace, the Ashoka Pillar, and Saraswati Koop.