Sonargaon is the ancient capital of Isa Khan's kingdom in Bengal. It is located near the current-day city of Narayanganj, Bangladesh. The great Muslim traveler Ibn Battuta visited it in the 14th century. It is the eastern terminus of the Grand Trunk Road, which was built by Sher Shah Suri in the 16th century, and which extends approximately 2500 kilometres across northern India and Pakistan to Peshawar in Pakistan's North-West Frontier Province.Historic placesSonargaon's `Lok Shilpa Jadughar', was a part of Isa Khan's capital. The Panam City was the center of the upper-middleclass people of 19th century Sonargaon. It is now in ruins. Mainly Hindu cloth merchants lived here. Musa Khan's Masjid, the Mosque beside the grave of Dr. Muhammad Shahidullah in Shahidullah Hall of the University of Dhaka is a marked work and it is said that the Mosque was made by Isa Khan or son of him, Musa Khan. The Fort of Hajiganj was the main tactical fort of Isa Khan in front of Meghna, Shitalakhya and Brahmaputra. Now at Narayanganj. It is saved by the authority. There is another sister concern of the fort across the river, few miles away. Due to the many threats to preservation (including flooding and vandalism) that this culturally and historically significant city faces, the World Monuments Fund placed it on its 2008 Watch List of the 100 Most Endangered Sites in this planet. (Source: http://en.wikipedia.org/)