Completely agree with you @Ssiddharth2000
Without a doubt, the Lodi Gardens campus is the most enjoyable historic area of Delhi.
Here are glimpses from my visits:
Tomb of Muhammad Shah in Delhi - Secluded but Joyful.
Bada Gumbad Masjid or Big Dome Mosque in Lodi Garden in Delhi.
The Sikandar Lodi Tomb in Delhi - A Saga of Corrupt Names.
Also at the entrance of the Lodi Garden is the National Bonsai Park in Delhi.



