Prayagraj: Where Three Rivers Meet
प्रयागराज: तीन नदियों का संगम
Quick Answer
Prayagraj (Allahabad) is where the Ganga, Yamuna, and invisible Saraswati meet at the Triveni Sangam. This confluence is the holiest bathing spot in Hinduism and hosts the Kumbh Mela, the largest human gathering on Earth.