Explanation

The first one is the samadhi (tomb) of Chand Kaur who was the wife of Kharak Singh and mother on Naunehal Singh.

The second smaller one is Samadhi of Gulab Kaur, Naunehal Singh's wife.

The third one in the background is the samadhi of Maharani Nakain Kaur who was a wife of Ranjit Singh and mother of Kharrak Singh