The painted pieces of plaster – also known as frescoes – were found in Southwark in central London, situated on banks of the River Thames in 2021.
Experts from the Museum of London Archaeology (Mola) say the frescoes are from at least 20 walls of a large building.
They also think that the grand building may have been home to a wealthy family or a hotel for rich travellers passing through London.
Han Li, from Mola, spent many months with the pieces of plaster, carefully examining each piece to put together what he describes as “the world’s most difficult jigsaw puzzle”.
“It’s one of the biggest – if not the biggest – assemblages of Roman wall plaster and paintings we’ve ever found in Roman London,” he explained.
