Lalbagh Fort is an incomplete Mughal palace fortress situated in Dhaka, Bangladesh. It was built in the mid-17th century by the Mughal Subahdar Muhammad Azam Shah, son of Emperor Aurangzeb. The fort stands on the banks of the Buriganga River, and covers an area of about 18 acres.

The fort's architecture represents the combination of Mughal and European styles. It consists of three main parts: the Diwan-i-Aam, the Diwan-i-Khas, and the mosque. The Diwan-i-Aam is a large open-air hall used for public audiences, while the Diwan-i-Khas is a smaller hall used for private audiences. The mosque, which is located inside the fort, is a single-domed building with three mihrabs.

The fort has four large gates, which were originally named after their location: the South Gate, the East Gate, the West Gate, and the River Gate. Only the South Gate remains in its original form, while the others have been reconstructed. The fort also has two half-bastions, one on the eastern side and the other on the western side.

Today, the fort serves as a popular tourist destination and a site for cultural events. It is also used as a museum, housing a collection of Mughal paintings and calligraphy, as well as various artifacts from the Mughal period. Lalbagh Fort is a significant cultural heritage site in Bangladesh and attracts visitors from all over the world.