What is that only IIT Kharagpur has but no other IIT does?

Some features that strikingly distinguish IIT KGP from other IITs are

• The massive lush green campus of around 2100 Acres
• A museum that was initially a Detention Center of the British era. A number of Indian freedom fighters were detained here.
• A very vibrant and fun-filled campus life because the world outside IIT KGP is boring.
• An LLB course is delivered in a very intellectual environment 
• Chedis, the night canteen is a savior for many who crave tea and snacks at 3 am. It runs even when everything on the campus is closed.
• Illu, the traditional Diwali celebrations that are unique and one of a kind at IIT KGP

All these features set IIT KGP apart from other IITs.