I suggest visit Putrajaya early morning before the sunrise. It is a very quiet and safe city to walk around. Enjoy the breathtaking views of this intelligent garden city.
Quick Tips:
I suggest renting a car if you stay in Kuala Lumpur. Just follow the KLIA direction and enter the North South Expressway. Putrajaya is very big, make sure you get the roadmap before driving. Here is an electronic map in case you need it: http://www.i-putra.com.my/aboutputrajaya.htm#.Best Way To Get Around:
Perdana Putra Building, Dataran Putra, Putra Mosque, Botanical Garden, Putra Lake (cruise available), Seri Perdana (official residence of the Prime Minister of Malaysia), Putrajaya Conventional Centre and more than 6 very nice bridges. There are few more night shots at my photo gallery. http://algallery.fotopic.net/c713178.html