The monument responds to seasonal temperatures, contracting a few millimeters when it's cold and expanding when it's warm.

The Eiffel Tower, one of the most visited landmarks in the world today, was once the tallest structure ever built too. At the ...

U.S. News Insider Tip: For the best photo opportunities of the Eiffel Tower, head to Place du Trocadéro. (Just expect to contend with some crowds!) – Nicola Wood, Senior Editor Designed and ...