Before becoming the most important and well-known city in the world, New York City and the surrounding area were swampland. As the city began to grow and develop, so did the need to travel in and out of the island. Once the automotive industry took off, bridges began popping up all over the city. Today 11 bridges lead onto the island of Manhattan and of those bridges, the Brooklyn Bridge is arguably the most famous. Opened in 1883, the Brooklyn Bridge was the world’s first steel-wire suspension bridge and the longest bridge in the world for almost 20 years. In a stunt to prove how sturdy the bridge was, 21 elephants crossed the bridge from Manhattan to Brooklyn.