The original list of the 7 wonders of the world, or 7 wonders of the ancient world, was meant as a tribute to man's ability to alter the natural landscape. The original 7 wonders of the world were 1.) The Hanging Gardens of Babylon, 2.) the Temple of Artemis, 3.) The Statue of Zeus, 4.) The Lighthouse of Alexandria, 5.) The Mausoleum of Halincarnassus, 6.) The Colossus of Rhodes, and 7.) The Pyramids of Egypt. All but the pyramids have disappeared.
There were a number of lists compiled by different Greek writers. Antipater of Sidon, and Philon of Byzantium, drew up two of the most well-known lists. Many of the lists agreed on six of the seven items. The final place on some lists was awarded to the Walls of the City of Babylon. On others, the Palace of Cyrus, King of Persia took the seventh position. Finally, toward the 6th century A.D., the final item became the Lighthouse at Alexandria.
Not all the Seven Wonders existed at the same time. While the Great Pyramid of Egypt was built centuries before the rest and is still around today, most of the others survived a few hundred years or less.