Heo Hwang-ok also known as Empress Boju, was a legendary queen mentioned in Samguk yusa, a 13th-century Korean chronicle. According to Samguk Yusa, she became the wife of King Suro of Geumgwan Gaya at the age of 16, after having arrived by boat from a distant kingdom called "Ayuta". Her native kingdom is believed to be located in India. There is a tomb in Gimhae, South Korea, that is believed to be hers, and a memorial in Ayodhya, India built in 2020. The Ayuta Kingdom is a misinterpretation of the Ay Kingdom, a vassal to the Pandyan Empire of ancient Tamilakam as some sources allude to her coming from the southern part of India,

A memorial of the Korean Queen Heo Hwang-ok is located in Ram Katha Park, near the ghats, on Sarayu River, in the holy Hindu city of Ayodhya, in Uttar Pradesh. The stone memorial, with an inscription of the legend of Queen Heo, sits inside a park. Planned upgrades featuring Korean and Indian architectural elements and landscaping, including a traditional pavilion, are expected to be completed in 2 years by the end of 2020 at the cost of INR 30 million.