The palace of Westminster England
The new roof was commissioned
London, England, United Kingdom
The roof Westminster Hall was probably originally supported by pillars, giving three aisles, but during the reign of King Richard II, this was replaced by a hammerbeam roof by the royal carpenter Hugh Herland, "the greatest creation of medieval timber architecture", which allowed the original three aisles to be replaced with a single huge open space, with a dais at the end. The new roof was commissioned in 1393.