Here is a group of the world’s largest buildings…
Largest Usable Space (from largest on down)
Largest Floor Space (from largest on down)
Largest Shopping Mall (from largest on down)
Largest Religious Site
Largest Presidential Palace
Largest Parliament
Largest Courthouse
Largest Bus Terminal
Largest Ship Building Hall
Largest Hemispherical Building
Largest Wooden Building
Largest Dormitory
Largest train Station (by area)