With the launch of a hot-air balloon over the ancient Acropolis, the campaign to select the new seven wonders of the world reached its final countdown in Athens.
More than 2,200 years after the naming of the seven wonders of the ancient world, people across the planet are to be given the chance to choose the new seven wonders.
All structures built or discovered before the year 2000 are eligible.
Last January, former UNESCO head Federico Mayor short-listed the 77 nominations to 21 finalists.
Voters around the world are to be given the chance to place their ballots until July 7, 2007 when the monuments that have been named the new seven wonders are scheduled to be announced in Lisbon.
Among the contestants are the Ancient Acropolis in Athens; Hagia Sophia in Istanbul; the Kremlin and Red Square, Moscow; Roman Colosseum; Neuschwanstein Castle, Germany; Eiffel Tower, Paris; Stonehenge, Britain; The Alhambra, Spain; The Great Wall of China; Kiyomizu Temple, Kyoto; Sydney Opera House; Angkor Wat, Cambodia; the Taj Mahal, India; Timbuktu, Mali; Petra, Jordan; the Pyramids ofGiza; the Statue of Christ the Redeemer, Rio de Janeiro; the Easter Island Statues; Machu Picchu, Peru; Chichen Itza, Mexico; the Statue of Liberty, New York.