Even in ancient times, a description of seven ancient structures appeared: Egyptian pyramids; "Hanging Gardens" of Babylon; Temple of Artemis in Ephesus; statues of Olympian Zeus; Mausoleum at Halicarnassus; The Colossus on the island of Rhodes and the lighthouse on the island of Foros, which were called wonders of the world. Time passed, people's views and tastes changed, and other structures were already ranked among the wonders of the world: the “leaning tower” in Pisa, Cologne Cathedral and many others. Even in the 19th, 20th and 21st centuries, the list continued to expand: now the Suez and Panama Canals, the Eiffel Tower, the Sydney Opera House and the Channel Tunnel are called wonders of the world. We will tell the reader about the 100 most famous wonders of the world.