The Seven Wonders of the World has historically been a listing of seven sites known to the Ancient Greeks as the most notable locales in their known world.
Since then, many have developed lists of the "modern" Seven Wonders of the World. The only list that really stands out and has stood the test of time for more than a decade is the Seven Wonders of the Modern World, developed by the American Society of Civil Engineers.
The Original Seven Wonders of the World
The Colossus of Rhodes
The Great Pyramid of Giza
The Hanging Gardens of Babylon
The Lighthouse of Alexandria
The Mausoleum at Halicarnassus
The Statue of Zeus at Olympia
The Temple of Artemis at Ephesus