The remnants of the Tower of Babel described in Genesis chapter 11 have been found.  In this episode of Religion Today host Martin Tanner explains how many sources outside the Bible confirm The Tower of Babel account was based on Etemenanki, an ancient Babylonian Ziggurat (stepped pyramid) about 298 feet high, located 56 miles south of what is today Bagdad, Iraq.  Genesis 10 says Shen, Ham, gentiles and their descendants all had different languages.  Thus, Genesis 10 seems to contradict the Genesis 11 assertion that before the Tower of Babel, the people of the earth all spoke one language.