Weiyang Palace "The Endless Palace", in (Han) Chang'an (now
7km/4 miles northeast of downtown Xi'an, Shaanxi province: imperial
palace of the prestigious Western Han Dynasty for two centuries.
This is the largest palace ever built on Earth, covering 4.8 km²
(1,200 acres), which is 6.7 times the size of the current Forbidden
City, or 11 times the size of the Vatican City.