Short answers, pulled from the story.
The Tomb of Asif Khan holds the remains of Mirza Abul Hassan Jah, a Mughal statesman who held the title Asif Khan. He was the brother of Empress Nur Jahan, the brother-in-law of Emperor Jahangir, and the father of Mumtaz Mahal, after whom the Taj Mahal in Agra was built.
Construction of the Tomb of Asif Khan began after Asif Khan's death on the 12th of June 1641 and continued for four years until 1645. According to Abdul Hamid Lahori, author of the Padshahnama, the total cost was 300,000 rupees. Emperor Shah Jahan commissioned the tomb.
The Tomb of Asif Khan is located in Shahdara Bagh, in the city of Lahore, in the Punjab province of Pakistan. It sits directly west of the Tomb of Jahangir, and near the Tomb of Nur Jahan, forming a notable cluster of Mughal monuments in that complex.
During the rule of the Sikh Empire, marble and sandstone were plundered from the tomb's interior, exterior, and decorative stonework. British explorer William Moorcroft recorded that Ranjit Singh ordered the removal; the plundered materials were used to embellish the Golden Temple in Amritsar and to build the Hazuri Bagh Baradari near Lahore Fort.
The Tomb of Asif Khan was built in a Central Asian architectural style and stands at the centre of a Persian-style Charbagh garden. It follows an octagonal plan, a form reserved in Mughal tradition for high-ranking noblemen rather than emperors, and is crowned by a bulbous double-layered brick dome unique in shape among Mughal structures.
The Tomb of Asif Khan is not yet a fully designated UNESCO World Heritage Site, but it is on the tentative list along with the adjacent Akbari Sarai and the Tomb of Jahangir. Conservation work at the site resumed in 2005 with assistance from the Global Heritage Fund.