At Kew Gardens, the Time Team crew has three days to find physical traces of the White House, the residence King George III actually preferred over Kew Palace before it was demolished in the early 1800s. Ground-penetrating radar surveys the lawns first, flagging anomalies that the team then opens with test trenches, cross-checking everything against conflicting 18th-century estate maps that disagree on where the building actually stood. The dig turns up cellar vaults and foundation walls from the vanished house, along with Tudor-era structural remains underneath, evidence that the site had royal building on it long before the Georgians arrived. Specialists move between the trenches and the finds tables, piecing broken pottery and brickwork into a working floor plan while historians fill in why George III wanted a private family home away from the formality of the main palace. The episode follows the familiar Time Team rhythm, radar survey, trench, debate, discovery, and ends with a clearer picture of a royal residence that modern Kew Gardens visitors would otherwise never know existed.