What king did Babylonian Empire reached its zenith?

The Babylonian Empire reached its zenith under King Nebuchadnezzar II, who reigned from 605 to 562 BCE. He is renowned for his military conquests, extensive building projects, and the construction of the Hanging Gardens of Babylon, one of the Seven Wonders of the Ancient World. Under his leadership, Babylon became a major center of culture and power in the ancient Near East.