Eiffel Tower, Paris

The Eiffel Tower has surpassed 300 million #eiffeltower Instagram tags, making it the world's most photographed structure, outperforming #2 on this list by over 100 million tags. Designed by Gustave Eiffel for the 1889 World's Fair, it now hosts 7 million visitors annually and is photographed from the Trocadero, from bateau mouches, and from the tower itself. The evening light show generates particularly viral content, with 60% of posts featuring nighttime shots.