In a vast bay swept by the most powerful tide in Europe, stands the French island commune of Le Mont Saint-Michel. Both a masterful abbey and an impregnable fortress, this silhouette is known around the world.
Al Khazneh, also known as the Treasury, is one of the most impressive sites of ancient Petra in Jordan. Along with the other architectural sites, it was hand carved by the ancient Nabataeans, from the beautiful red sandstone mountain.
On the planet's largest continent, in Asia, the Great Wall of China spans the country from East to West. Constructed for over 2,000 years by generations of Chinese builders, it is now a world wonder.
The city of Machu Picchu was erected at 2430 meters high on a rocky crest in the heart of the Peruvian Andes. Experts now have the means to explore what lies beneath and around this ancient city, and reveal its secrets.
