Tacoma Narrows Bridge (1940)

"From the time the deck was built, it began to move vertically in windy conditions, which led to construction workers giving the bridge the nickname Galloping Gertie. The motion was observed even when the bridge opened to the public. Several measures aimed at stopping the motion were ineffective, and the bridge's main span finally collapsed under 40-mile-per-hour (64 km/h) wind conditions the morning of November 7, 1940. The portion of the bridge that fell into the water now serves as an artificial reef."

"Some of the largest octopi in the world, the Giant Pacific Octopus, live among the ruins of the original Tacoma Narrows Bridge."