Londoners will be able to find out about the history of the Thames when the foreshore at the Tower of London opens to the public this weekend.
A number of historical items have been found on the shore
As part of National Archaeology Weekend the World Heritage site of Tower Beach will host a number of walks and talks.
Previous finds there include a medieval knife and Roman glass as well as clay pipes, animal bones and pottery pieces.
Environmental charity Thames 21 will be cleaning up litter. The free events run during the two mornings.
Anyone who wants to lend a hand with the clear-up will be provided with equipment.
The beach is open during low-tide which is from 1000 BST until 1200 BST on Saturday and 1000 BST and 1230 BST on Sunday.