In the following I would like to suggest some interesting tours. But, if you like, you can modify these tours or combine them with each other.

Please feel free to send me your own tour-suggestions via e-mail. And I would be glad to send you an offer

Depending on the length of your stay, you can choose which sights you want to visit.
New Delhi: Humayun's grave, Raj Path with Rashtrapati Bhavan, Parliament House and India Gate, Qutab Minar, Laxmi Narayan Temple, Lotus Temple, Connaught Place and much more;
Old Delhi: Red Fort, Jama Masjid, Chandni Chowk Bazar, Raj Ghat and much more