A firing of objects, made from Thames clay on the foreshore below the Globe, takes place on Saturday 13 September from 7pm.
The fire will eventually be extinguished later in the evening by the incoming tide and the following morning the objects will be revealed as the tide recedes again.
This is one of the new events in this year's Mayor's Thames Festival taking place along the South Bank and Bankside over the weekend.
On Saturday afternoon historic vessels including vintage tugs and a Thames sailing barge will be at moorings between the Oxo Tower and Waterloo Bridge.
After dark in Jubilee Gardens Sticky by Improbable Theatre with the World Famous combine outdoor theatre, fireworks and a live-mix soundscape.
On both days there is a Riverside Bazaar, a funfair, attractions, food and craft market with quality world foods and unusual products on South Bank. Bernie Spain Gardens is the music venue.
The climax on Sunday is a 'Midnight' Menagerie Procession of Lights starting as the sun sets at 7.30pm.
• The River of Life Mural made entirely from recycled materials collected
from the Thames foreshore will be unveiled in Bargehouse Street behind the Oxo Tower at 6.15pm on Sunday. It has been created by local children and part sponsored by Singapore Airlines.