Short answers, pulled from the story.
Sultan Muhammed Shah Aga Khan III constructed the palace to provide wages and food for starving villagers during a severe drought in Maharashtra. Construction involved one hundred thousand people over five years to help families survive the crisis.
Mahatma Gandhi entered the palace gates on the 9th of August 1942 following the launch of the Quit India Movement. He remained detained there until the 6th of May 1944 along with his wife Kasturba Gandhi and secretary Mahadev Desai.
Three samadhis stand enclosed by a low wall with marble flooring near the Mula river where the family once walked. These memorials hold the ashes of Kasturba Gandhi, Mahadev Desai, and a portion of Mahatma Gandhi's ashes shifted there in 1992.
The ground floor covers an area of 1756 square meters while the first floor spans 1080 square meters and the second floor measures 445 square meters. An Indo-Saracenic style defines the entire structure with its pediments and turrets.
Aga Khan IV donated the property to the Indian people in 1969. Prime Minister Indira Gandhi visited the place in 1974 and allocated funds for maintenance which later rose to higher amounts until the 1990s.