וַיֵּ֣רֶד יְהוָ֔ה לִרְאֹ֥ת אֶת־הָעִ֖יר וְאֶת־הַמִּגְדָּ֑ל אֲשֶׁ֥ר בָּנ֖וּ בְּנֵ֥י הָאָדָֽם׃
And the LORD came down to see the city and the tower, which the children of men builded.
Read kabbalistic (mystical) interpretation of Genesis 11:5: and classical mystical sources.