Completed and opened without the use of electricity, the Brooklyn Bridge was used primarily for horse-drawn carriage, pedestrians/bicycle, and railcar. It is an American icon and one of the most widely recognized modern monuments in the world. 

The Brooklyn Bridge should be visited in 3 ways, each is a reward worth your time.

1) Walking the entire bridge, preferably from Brooklyn to Manhattan

2) View the bridge from the DUMBO neighborhood, specifically Brooklyn Bridge Park

3) View the bridge from the East River Esplanade at night

We can probably expect a nomination sometime around 2023. Which would be fitting to mark 140 years since the bridge opened. NYC really should have 3 or 4 world heritage sites, the fact that the Statue of Liberty is the only inscribed site within sight of NYC is unfortunate.