Gradačac Castle has a fort with 18-metre high walls built between 1765 and 1821, and a 22-metre high watchtower, built in 1824 by Husein-kapetan Gradaščević on foundations made originally by the Romans.
Works by Ahmed S. Aličić, Mustafa Imamović, and Husnija Kamberović have all cast Gradaščević in a more positive light.
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Gradaščević was also relatively loyal to Abdurahim's successor, Namik-paša, reinforcing Ottoman garrisons in Šabac upon his orders.