Prayagraj, (also Prayag), is the place where Prajapati Brahma did severe Tapasya (Penance) for thousands of years and which was once the Tapobhumi of sages. It is also known as Bhaskar Kshetra and Tapobhumi of Soma, Varuna and Prajapati, where the confluence of rivers Ganga and Yamuna takes place with invisible Saraswati. According to Ramayana, Maryada Purushottam Lord Shri Ram during his exile, had stayed at Shringverpur, the capital of Nishadraj, settled on the banks of the Ganges. He also rested in the ashram of Maharishi Bharadwaj after crossing the Ganges. The great saint, writer and poet, Mahakavi Tulsi Das, has described the glory of Prayag in Ramcharitmanas by writing,
Kalash Punj Kunjar Mrigrau.
In view the geographical expansion and with an objective to ensure the social, economic and moral upliftment of the people of the entire area, when Kaushambhi was carved out from the western part, Prayagraj was left with 8 Tehsils – Koraon, Sadar, Phulpur, Handia, Karchana, Bara, Meja, Soraon and 23 development blocks.