[Lhasaguy]

Summer Palace 颐和园
http://en.wikipedia.org/wiki/Summer_Palace

Temple of Heaven 天坛
http://en.wikipedia.org/wiki/Temple_of_Heaven

Yonghe Temple 雍和宫
http://en.wikipedia.org/wiki/Yonghe_Temple

Beihai Park 北海公园
http://en.wikipedia.org/wiki/Beihai_Park

Jingshan Park 景山
http://en.wikipedia.org/wiki/Jingshan_Park

outside the city--

Ming Dynasty Tombs 十三陵
http://en.wikipedia.org/wiki/Ming_Dynasty_Tombs

Tanzhe Temple 潭柘寺
http://en.wikipedia.org/wiki/Tanzhe_Temple

and many more......

There are many tourists, but I hope you can enjoy your holiday!