[W]hen the enemy endeavored to cut off his communication by sea, he was forced to divert that danger by setting fire to his own ships, which, after burning the docks, thence spread on and destroyed the great library. Plutarch, Life of Caesar
The Lighthouse of Alexandria, sometimes called the Pharos of Alexandria was a lofty tower built by the Ptolemaic Kingdom between 280 and 247 BC and between 393 and 450 ft (120 and 140 m) tall, it was one of the tallest man-made structures on Earth for many centuries, and was regarded as one of the Seven Wonders of the Ancient World. (albion-prints, 2013)
Cleopatra's Royal Quarters found in Alexandria, Eqypt by French underwater acheologist Frank Goddio. Lost for 1,600 years, historians believe the site was submerged by earthquakes and tidal waves, yet, astonishingly, artifacts remained largely intact. - Ancient Egypt
Kom el-Shuqafa Catacombs, Alexandria, Egypt-- Kom el-Shuqafa (catacombs) are a marvel of technology and art. Built in the late 1st century AD, the Kom el-Shuqafa (literally means "Mound of Shards") is the largest known Roman burial site in Egypt. Since the catacombs were built to house more than 300 dead notables, there are plenty of tombs to explore as well as a banqueting hall. Many of the rooms display a unique fusion of ancient Egyptian, Greek and Roman decorative artwork.