According to the Bible legend, all people were speaking the same language until one moment God got angry on them because they built a high tower. However, the Tower of Babel was not built for the worship and praise of God, but was dedicated to the glory of man. God punished them with giving them all diferrent languages to speak and confounding their languages so the people scattered throughout the earth.
In a methaphoric way the tower of Babel actually is the home of languages, the place where different languages were born.
In my poster the different color of the bubbles, coming out of the Tower, represents different languages.