Final answer:
The Assyrian palace at Khorsabad was guarded by lamassu, which are colossal winged creatures with a human head and the body of a bull or lion.
Step-by-step explanation:
The sculptural figures that guarded the main entrance gate into the Assyrian palace at the city of Khorsabad, also known as Dur-Sharrukin, were known as lamassu. These impressive figures were mythological guardians with the head of a man, the body of a bull or lion, and massive wings. Designed to convey the power and majesty of the Assyrian kings, lamassu sculptures are monumental alto reliefs that stood at the palace gateways, embodying a blend of divinity, protection, and royal authority. They were prominent during the rule of Sargon II in the eighth century BCE, a time when Assyrian civilization was at its height, and these sites now lie within the boundaries of modern-day Iraq.