Short answers, pulled from the story.
Raj Ghat is a memorial complex on the west bank of the Yamuna River in New Delhi, India. It is located on Delhi's Ring Road, just east of the Daryaganj neighborhood, on land that was historically a riverside ghat outside the old walled city of Shahjahanabad.
Raj Ghat commemorates Mahatma Gandhi at the original site, along with memorials for multiple Prime Ministers including Jawaharlal Nehru, Lal Bahadur Shastri, Indira Gandhi, Rajiv Gandhi, Chandra Shekhar, and Atal Bihari Vajpayee, as well as several Presidents of India including Zail Singh, Shankar Dayal Sharma, K. R. Narayanan, and Pranab Mukherjee.
The Gandhi memorial was established to mark the location of his cremation on the 31st of January 1948. It consists of a black marble platform with an eternal flame at one end.
In 2000, the government of India under Atal Bihari Vajpayee decided to stop creating new individual memorials because the existing sites already occupied more than 245 acres of prime land in Delhi.
Rao died on the 24th of December 2004 at the All India Institute of Medical Sciences in Delhi, and his family requested cremation at Raj Ghat, but this was not granted at the time. A memorial at Gyan Bhumi was only erected in 2015, nearly ten years after his death.
Raj Ghat loosely translates to Royal Steps. The word "royal" alludes to the historical importance of the site, and "steps" references the climb down from the land to the banks of the Yamuna River.