Prayagraj (Sangam): Focus is on the unparalleled purifying and liberating power of the Triveni Sangam (‘Tirtharaj’). Rituals leverage the combined energy of Ganga, Yamuna, and Saraswati. Considered the starting point by some traditions (e.g., Lord Rama performed initial rites here).
Gaya (Vishnupad): Supreme importance for Pind Daan specifically, due to Vishnu’s footprint and Gayasur’s boon, ensuring direct Moksha via Pindas. The Phalgu River is key. Considered the culmination point by some traditions.
Varanasi (Ganga/Kashi): Significance from Lord Shiva’s abode (Kashi) and the holy Ganga. Focus on liberation within Shiva’s city and Ganga’s purification.
