The engineering legacy of Alexander the Great concludes with an examination of Ptolemy IÕs vision for the Great Museum and Library of Alexandria. A beacon for scholars of the world, the library housed the worldÕs first great think tank...

After the death of Alexander, Ptolemy I assumes control of Egypt. Combining Greek culture and Greek and Egyptian know-how, PtolemyÕs engineers design and build the first known lighthouse. Computer generated reconstructions present...