Patalpuri Temple is a Hindu temple which is situated in the Indian state of Uttar Pradesh, Allahabad. Allahabad's name has been changed 'Prayagraj' by the Uttar Pradesh Government in October 2018, which is the old name of this place. Patalpuri temple is one of the oldest temples of Allahabad. Patalpuri Temple and the Undying Banyan tree is located near to each other. Patalpuri Temple is located inside Allahabad Fort. Patalpuri Temple is a temple situated under the earth which is known by its name. This fort was built in 1583 during the reign of Akbar. The Amar Banyan tree is known as 'Akshayavat'. This tree is considered very sacred. It is said about the Undying Banyan tree that this tree will be standing even when the entire world is destroyed. This place is one of the main tourist places of Allahabad (Prayagraj).
It is believed that Lord Rama and Prahalada visited this Patalpuri temple. Famous Chinese traveler and writer Hiuen Tsang visited this temple during his visit to India.