The Great Wall: the longest defensive wall in the world
The Imperial PalaceThe Imperial Palace: the largest and best preserved palatial complex existing now.
The Temple of Heaven: the largest heaven-worshipping architecture in the world.
The Summer Palace: the best preserved imperial garden in the world.
Ming Tombs: the best preserved imperial mausoleum structure where most emperors were buried.
The Site of Peking Man at Zhoukoudian: an ancient human cultural site with most abundant cultural remains, where the fossil of homo erectus was discovered with traces of fire-usage.
Yunju Temple: the temple with the largest collection of stone-carved Buddhist scriptures in the world.