If you want to see places so here it is,
1-Jantar Mantar in Connaught place. side by side you can see the central park.
2- Kalkaji Mandir Nehru place.
3- Hazrat Nizamuddin Dargah. it is also famous for a few food stalls.
4- and Gurudwara Bangla Sahib again in Connaught place.
If you love food and want to explore you should visitePURANI DILLI (Old Delhi)