Forbidden City & Tian'anmen
The Forbidden City is the world's largest surviving wooden palace complex; the Hall of Supreme Harmony and Palace of Heavenly Purity on the central axis are magnificent. Tian'anmen Square lies just to the south — book in advance with real names.
The Great Wall
Badaling is convenient and grand; Mutianyu is quieter and greener. Hike up for sweeping views of the wall winding across the mountains.
Gardens and alleys
The Summer Palace and Temple of Heaven show imperial garden and ceremonial architecture at their finest, while the hutongs around Nanluoguxiang and Shichahai keep the flavor of old Beijing.