There are so many options open for u to spend ur weekend in an unforgettable manner.
if u are an adventorus person then u should definately visit these places

Sariska- Sariska Palace, 4 hrs drive from Delhi, a heritage property based in 100 acres right next to Sariska Tiger Sanctuary.
Nahan, Himachal is about 5 hours drive from Delhi and beautiful low hills with green forests surround it.
Kikar Lodge near Ropar is a beautiful forest resort covering a huge green area with camps and cottages. Just a cool 6 hrs drive from Delhi and 1 1/2 hrs from Chandigarh.
If you are a bird watcher you must go to Bharatpur, if you are not you will become one once you visit the Ghana bird sanctuary at Bharatpur

these places could definately give u an lifetime experience.:)