From the longer Wikipedia article 
The Royal Victoria Dock is the largest of three docks in the Royal Docks of east London, now part of the redeveloped Docklands. It was opened in 1855 on a previously uninhabited area of the Plaistow Marshes, it was the first of the Royal Docks and the first London dock to be designed specifically to accommodate large steam ships. It was also the first to use hydraulic power to operate its machinery and the first to be connected to the national railway network via the Eastern Counties and Thames Junction Railway section of what is now the North London Line. It was initially known as "Victoria Dock"; the prefix "Royal" was granted in 1880.
The Royal Victoria Dock has experienced major redevelopment under the London Docklands Development Corporation. The dock itself still exists and is accessible to ships, although its western entrance has been filled in and it is now used chiefly for watersports. Its transport links have been greatly improved with new roads and Docklands Light Railway lines running along both its north and south side.
Most of the original warehouses have been demolished but the historic 19th century K-S and W Warehouses - both listed buildings - have survived.
The dock is dominated by the ExCeL Exhibition Centre, constructed on the north quayside and opened in November 2000, and by the adjacent high level Royal Victoria Dock Bridge. The waterside location of ExCel is used to its advantage when it hosts the annual London Boat Show, with visiting vessels moored alongside the exhibition centre.