Question: What building in the London Docklands lays claim to being the site of the oldest riverside tavern? 

Related documents: [0]  [DOC] Wapping ( ) is a district in London Docklands, England, in the London Borough of Tower Hamlets. It is situated between the north bank of the River Thames and the ancient thoroughfare simply called The Highway. Wapping's proximity to the river has given it a strong maritime character, which it retains through its riverside public houses and steps, such as the Prospect of Whitby and Wapping Stairs. [END] 
[1]  [DOC] The Prospect of Whitby is a historic public house on the banks of the Thames at Wapping in the London Borough of Tower Hamlets. It lays claim to being the site of the oldest riverside tavern, dating from around 1520. [END]  
Answer: Prospect of Whitby
Prospect of Whitby