The Brooklyn Bridge is a hybrid cable-stayed/suspension bridge in New York and is one of the oldest bridges of either type in the U.S. Construction began this date in 1870 and was completed in 1883. It connects the boroughs of Manhattan and Brooklyn by spanning the East River. It was the first steel-wire suspension bridge constructed. Since opening, it has become an icon of New York City and was designated a National Historic Landmark in 1964 and a National Historic Civil Engineering Landmark in 1972.
The bridge was built with numerous passageways and compartments in its anchorages. New York City rented out the large vaults under the bridge’s Manhattan anchorage in order to fund the bridge. Opened in 1876, the vaults were used to store wine as they were always at 60° F. This was called the “Blue Grotto” because of a shrine to the Virgin Mary next to an opening at the entrance. There’s no record of how long the vaults were used for this purpose. (from Wikipedia and cute-calendar.com)