Short answers, pulled from the story.
Akbar left Fatehpur Sikri in 1585 to conduct a campaign in Punjab and never made it his capital again. The city was completely abandoned by 1610. The most commonly cited reason is the failure of the water supply, though Akbar's personal loss of interest has also been suggested, since the city was built on his individual initiative.
Fatehpur Sikri was founded in 1571 by the Mughal Emperor Akbar. He chose the site because his son Jahangir had been born there in 1569 and because the Sufi saint Sheikh Salim Chishti had predicted that birth. The city served as the capital of the Mughal Empire from 1571 to 1585.
Fatehpur Sikri means "City of Victory." The city took this name after Akbar's successful Gujarat campaign of 1573. The name is a combination of "Fatehpur," meaning City of Victory, and "Sikri," the name of the original village that occupied the site.
Fatehpur Sikri was awarded UNESCO World Heritage Site status in 1986. The designation recognised both the city's historical importance as the capital of the Mughal Empire and the outstanding quality of its architecture.
The Buland Darwaza is a monumental gateway at Fatehpur Sikri, standing 54 m from the ground and 150 ft tall. It was built as a victory arch to commemorate Akbar's Gujarat campaign of 1573, added around five years after the completion of the Jama Masjid. The largest of its three arched entrances is called the Horseshoe Gate, after the local custom of nailing horseshoes to its wooden doors.
Archaeological excavations at Birchhabili Tila found evidence of settlement dating to the 6th century CE, over a thousand years before Akbar built his capital. A broken Jain sculpture at the site dates stylistically to the 6th or 7th century. An inscription on a Jain statue found there records its installation in 1010 CE, during the reign of a king named Vajrama.