Most visitors likely visit the place after seeing the Taj Mahal. This might impact the overall impression after visiting such an incredible monument. Nevertheless, the Fort is quite impressive, this is a huge fortification with several gardens and palaces inside it. Some buildings have nice views of the Taj Mahal far away. I visited the fort at 9.30 in the morning on a Saturday, there were no queues and I enjoyed visiting most of the places empty of visitors. No "official" guides outside the gate to offer their services, so overall very enjoyble experience.