Stonehenge is a massive stone monument located on a chalky plain north of the modern-day city of Salisbury, England.
Auschwitz was the largest of the Nazi concentration and extermination camps.
The Colosseum is the largest ancient amphitheater ever built.
Windsor Castle is a royal residence at Windsor in the English county of Berkshire.
Buckingham Palace is the London residence and administrative headquarters of the monarch of the United Kingdom.
The Leaning Tower of Pisa is a freestanding bell tower known for its unintended tilt.
The Palace of Versailles is a grandiose architectural masterpiece located in the Île-de-France region.
The Pantheon is a former Roman temple, now a Catholic church, in Rome, Italy.
The Louvre is the world's largest art museum and a historic monument in Paris, France.
The Tower of London is a historic castle located on the north bank of the River Thames in central London.