This imposing fort was built between 1589 and 1594 by Raja Rai Singh, one of the trusted Rajputs general of the Akbar. the fort is formidable structure encircled by a moat and has some beautiful places within. These  places made in red sandstone and marble, make a picturesque ensemble of courtyards, windows dotted all over the structure. It has 96 mt long wall, with 37 bastions and 2 entrances. The main entrance of the fort is Sun Gate. the fort encompasses many places amongst which the most spectacular ones are the Moon Mahal, and Flower Palace both ornated with carved panels and mirrors and Karan Mahal, Karan Mahal was built in remembrance of the celebration of the grand victory over Aurangzeb.

The Palace was built by Maharaja Ganga Singh in the memory of his father Maharaja Lal Singh. The Palace has beautiful latticework and filigree work. The Palace is quite imposing with overhanging balconies and delicate work. Peacocks and blooming bougainvillea in the garden welcome the visitor to the place. Part of the Palace has been converted into a hotel, but the rest remains a museum, displaying an excellent collection of old photographs and hunting trophies. There is also a library which is supposed to possess the largest collection of original Sanskrit manuscripts in the world. These manuscripts are on parchment, copper, and gold or silver plaques.

It is the main entrance to the fort. among the notable of these places are the exquisitely beautiful Chandra Mahal with marvelous paintings, mirrors and carved marble panels and the Phool Mahal ornate with glass and mirror work.

 
One of the best museum in Rajasthan, the Ganga Golden Jubilee Museum has one of the richest collection of terracotta ware, weapons, miniature, paintings of Bikaner school and coins dating back to Harappan civilazation and gupta and Kushan era.

The 600 year old temple dedicated to Karni Mata, an incarnation of Goddess Durga. the Temple has huge intricately carved silver gates denoted by Maharaja Ganga Singh. The Temple plays host to thousand of rats that form the major attraction here. The rats are considered sacred and worshipped accordingly. 

A part of the Lalgarh Palace has been converted into a museum. Known as the Sadul Museum, it covers the entire first floor of the palace. Some of the well-preserved old photographs and trophies of wildlife collected by the royalty have been housed here.

The Ganga Mahal was Maharaja Ganga Singh's contribution to Junagarh Fort in the early 20th century. This pink sandstone hall, having walls carved with delicate tracery and scrollwork, today houses part of the fort museum. From jade-handled daggers to ivory-inlaid muskets, an exotic array of antique Rajput weaponry is on display here.

The place located on the bank of the lake was the summer resort of the former kings . today it has been treated as a hotel.