It took 14 years to build the Brooklyn Bridge and some people were worried that it wasn’t safe upon its completion. P.T. Barnum set out to prove the bridge’s strength and his trust in the bridge by marching 21 of his elephants across this magnificent structure! Learn more about this famous event and about the different structures of bridges around the world. Try your expertise at building Leonardo’s Arched Bridge without glue, nails, screws or rope! Space is limited; registration required. Please visit our online calendar to register.