You can visit India Gate, Lodi Gardens, Chandni Chowk
You can take a stroll through Mehrauli Archaeological Park, Nehru Park, Kamla Nehru Ridge or check out Akshardham Mandir.
You can visit Akshardham temple if you haven't the entry is free of cost ( The musical fountain show is of just ₹30 so I recommend you to watch that as it is really very mesmerizing)
Explore Aravalli Biodiversity Park perhaps on a bike
Akshardham, Agrasen ki baoli, cannaught place