The Washington Monument Was the World's Tallest Structure for 5 Years
Completed in 1884, the Washington Monument stands 555 feet (169 meters) tall and was the tallest man-made structure in the world until the Eiffel Tower surpassed it in 1889. It took 36 years to build due to funding shortages and the Civil War — which is why a careful look at the obelisk reveals a subtle color change about one-third of the way up, where construction resumed after a long pause.