Seven Wonders Of The World In 2000 a Swiss foundation launched a campaign to determine the New Seven Wonders of the World. Given that the original Seven Wonders list was compiled in the 2nd century BC—and that only one entrant is still standing (the Pyramids of Giza )—it seemed time for an update. And people around the world apparently agreed, as more than 100 million votes were cast on the Internet or by text messaging. The final results, which were announced in 2007, were met with cheers as well as some jeers—a number of prominent contenders, such as Athens ’s Acropolis , failed to make the cut. Great Wall Of China Great might be an understatement. One of the world’s largest building-construction projects, the Great Wall of China is widely thought to be about 5,500 miles (8,850 km) long; a disputed Chinese study, however, claims the length is 13,170 miles (21,200 km). Work began in the 7th century BC and continued for two mi...