Heyyy everyone, this one is actually if you only have 1 or 2 days in Delhi either as you'll be heading to somewhere or coming from somewhere.. So in 2 days how can you cover the Delhi that too in real sense not the hyped Delhi but the Real Delhi ..
Day 1: Reach R. K Ashram Metro station, get down.
Have famous कड़ी-Kachori, Sugarcane juice and German Bakery products from Pahar Ganj (some call it Vegas of India).
Shop whatever you want, it's a market for foreigners and Indians, from raw material to branded items, street food to international cuisines, Beer to wine/champainge whatever it is you name it and Pahar Ganj has it all.
Once you had it, cross the road and reach Delhi famous Birla Mandir,
few meters ahead is Gautam Budh Temple,
few more meters ahead is Kali Mata Temple, few more meters ahead is Balaji Temple
10 minutes walk from Balaji Temple_youll land into Sacred Cathedral Chruch,
2 minutes walk and you'll reach Gurudwara Bangla Sahib ji, have a pleasant time there take the langar and be blessed.
After that head to Hanuman Temple, CP taste the famous Kachori or hanuman Mandir,
So here you are in CP, roam, eat, drink, get clicked or shop.
In the evening head towards India Gate and War Memorial of India patriotism will take you away there, see the glory in lights in night and head for a 10 minutes walk to Rashtrapati Bhawan in all lights adjacent to Parliament of India all lighted up.