English: Dilli Darwaza (Delhi Gate),The Dilli Darwaza is the main gate of the complex, and faces north towards Delhi. Chhatrapati Shahu is said to have considered the north-facing fort a sign of Baji Rao's ambitions against the Mughal empire, and suggested that the main gate should be made chhaatiiche, maatiche naahi! (Marathi for of the chests of brave soldiers, not mere mud).

The strongly built Dilli Darwaza gatehouse has massive doors, large enough to admit elephants outfitted with howdahs (seating canopies). To discourage elephants charging the gates, each pane of the gate has seventy-two sharp twelve-inch steel spikes arranged in a nine by eight grid, at approximately the height of the forehead of a battle-elephant. Each pane was also fortified with steel cross members, and borders were bolted with steel bolts having sharpened cone heads. The bastions flanking the gatehouse has arrow-loops and machicolation chutes through which hot substances could be poured onto offending raiders. The right pane has a small man-sized door for usual entries and exits, too small to allow an army to enter rapidly. Shaniwar Wada was built by contractor from Rajasthan known as 'Kumawat Kshatriya', after completing construction these people well known by name 'Naik'. The name 'Naik' was given to them by Peshwa.

Even if the main gates were to be forced open, a charging army would need to turn sharply right, then sharply left, to pass through the gateway and into the central complex. This would provide a defending army with another chance to attack the incoming army, and to launch a counterattack to recapture the gateway.