[21] However, the gardens were said to still exist at the time that later writers described them, and some of these accounts are regarded as deriving from people who had visited Babylon.[2] Herodotus, who describes Babylon in his Histories, does not mention the Hanging Gardens,[22] although it could be that the gardens were not yet well known to the Greeks at the time of his visit.[2]
To date, no archaeological evidence has been found at Babylon for the Hanging Gardens.[6] It is possible that evidence exists beneath the Euphrates, which cannot be excavated safely at present. The river flowed east of its current position during the time of Nebuchadnezzar II, and little is known about the western portion of Babylon.[23] Rollinger has suggested that Berossus attributed the Gardens to Nebuchadnezzar for political reasons, and that he had adopted the legend from elsewhere.