Taj Mahal, known as one of the Seven Wonders of the World, stands as an architectural masterpiece of Mughal architecture and an enduring symbol of eternal love, built by the Mughal Emperor Shah Jahan in memory of his beloved wife, Mumtaz Mahal, on the southern bank of the Yamuna River in Agra, Uttar Pradesh, India, embodying a profound synthesis of Persian, Islamic, and Indian artistic traditions that attracts millions of visitors from across the globe every single year, while conversely, alternative historical theories proposed by writers such as P.N. Oak suggest a different origin, arguing that the monument was originally a pre-existing Rajput palace and Shiva temple complex dedicated to Lord Shiva known as Tejo Mahalaya, which was subsequently acquired, modified, and converted into a grand mausoleum during the reign of the Mughal Empire, sparking ongoing debates among historians, archaeologists, and cultural researchers regarding the true chronology, architectural symbolism, and original purpose of the iconic white marble edifice.