It was constructed by Bharatpur Jat rulers. Maharaja Suraj Mal used all his power and wealth to a good cause, and built numerous forts and palaces across his kingdom, one of them being the Lohagarh Fort(Iron fort), which was one of the strongest ever built in Indian history. The inaccessible Lohagarh fort could withstand repeated attacks of British forces led by Lord Lake in 1805 when they laid siege for over six weeks. Having lost over 3000 soldiers, the British forces had to retreat and strike a compromise with the Bharatpur ruler. Of the two gates in the fort, one in the north is known as Ashtdhaatu (eight metalled) gate while the one facing the south is called Chowburja (four-pillared) gate. It is very different from the other forts in Rajasthan state, there is no flamboyance associated to fort but it generates an aura of strength and magnificence. The fort is surrounded with moat which was previously filled with water to ward off the enemy attacks. The sandy ramparts were strengthened by sandy battlements, thus the enemy guns proved of no avail.

Some interesting monuments in the fort are Kishori Mahal, Mahal Khas and Kothi Khas. Moti Mahal and towers like Jawahar Burj and Fateh Burj were erected to commemorate the victory over the Mughals and the British army . The Gateway has paintings of huge elephants.

The Keoladeo National Park or Keoladeo Ghana National Park formerly known as the Bharatpur Bird Sanctuary in Rajasthan, India is a famous avifauna sanctuary that sees (or saw) thousands of rare and highly endangered birds such as the Siberian Crane come here during the winter season. Over 230 species of birds are known to have made the National Park their home. It is also a major tourist centre with scores ofornithologists arriving here in the hibernal season. It was declared a protected sanctuary in 1971. It is also a declared World Heritage Site. Other species include the ruddy shelducks, gulls,northern shovelers, northern pintails, coots, garganey, tufted ducks and common pochard.

It is a city and a municipality in Bharatpur district. It is situated in the north of Bharatpur at a distance of 32 km. Deeg comes under THE BIG PARIKRMA MARG of Lord Krishna which was started from Goverdhan, just only 12 km. far from deeg. It is an ancient town. It finds mention in Skanda Purana as "Dirgha" or "Dirghapur". Deeg was the first capital of the newly carved out Jat state of Bharatpur, when Badan Singh was proclaimed its ruler in 1722. In 1730, the Maharaja Suraj Mal erected the strong fortress of Deeg. After Suraj Mal moved the capital to Bharatpur, Deeg became the second capital of the rulers of Bharatpur princely state. It is known for its number of forts, palaces, gardens and fountains.