Which ancient wonder was traditionally attributed to the Babylonian king Nebuchadnezzar II?

The Hanging Gardens of Babylon were traditionally attributed to the Babylonian king Nebuchadnezzar II.

Classical writers described the gardens as a monumental landscape of elevated terraces, supplied with water in the city of Babylon. Several accounts connect them with Nebuchadnezzar II, who ruled the Neo-Babylonian Empire from 605 to 562 BC.

Unlike the other wonders, the gardens’ historical existence is uncertain. No surviving Babylonian inscription has been found that clearly describes them, and excavations at Babylon have not produced definitive remains.

Some modern scholars have proposed that the stories may refer instead to gardens built by the Assyrian king Sennacherib at Nineveh. The traditional answer remains the Hanging Gardens of Babylon, but their location and builder are debated.