Eiffel Tower, Paris, France: Built for the 1889 Exposition Universelle, it remains an enduring symbol of Paris and France.
Taj Mahal, Agra, India: A magnificent marble mausoleum built in the 17th century by Emperor Shah Jahan for his wife Mumtaz Mahal.
Empire State Building, New York City, USA: A 102-story skyscraper completed in 1931, once the tallest building in the world and an emblem of Art Deco architecture.
Sydney Opera House, Sydney, Australia: Known for its distinctive sail-like design, opened in 1973 and is a UNESCO World Heritage site.
Colosseum, Rome, Italy: An ancient amphitheater completed in AD 80, used for gladiatorial contests and public spectacles.
Burj Khalifa, Dubai, UAE: The tallest building in the world, standing at 828 meters (2,717 feet) tall, completed in 2010.
Great Wall of China: A series of fortifications built over centuries, primarily during the Ming Dynasty, stretching over 13,000 miles.
St. Basil's Cathedral, Moscow, Russia: A stunning example of Russian architecture, built in the 16th century on Red Square.
Big Ben (Elizabeth Tower), London, UK: A famous clock tower completed in 1859, part of the Palace of Westminster and iconic symbol of London.