Allahabad Fort

Allahabad Fort is a massive Mughal fortress built by Emperor Akbar in 1583 at the Triveni Sangam — one of the largest forts in India, combining Hindu, Buddhist, and Mughal architectural elements. Within its walls lies the sacred Akshayvat (immortal banyan tree) and the underground Patalpuri Temple, considered among Hinduism's most sacred sites. An ASI-protected monument partially under Indian Army jurisdiction. The Ashoka Pillar (232 BCE) within the fort is one of India's oldest historical artefacts.