Ruins of Langley Palace in the Garden of No 80 (York Ridge)

The ruins of Langley Palace are located in the garden of No. 80 (York Ridge) in Kings Langley. These remnants consist of ruined walls and fragments of stonework dating from the 16th century or earlier. The walls are made of uncoursed knapped flint with red brick at the angles, featuring a plinth offset and internal arched recesses. There is also limestone dressed stonework from arches and mullioned windows integrated into later walling that is attached to the older walls. The ruins represent the northwest corner of a flint-walled building, standing approximately 4 meters tall, with walls about 600 millimeters thick that show signs of internal plaster. The structure extends about 4 meters to the south and 2 meters to the east from the corner, where a lower wall with stonework fragments is connected, featuring a stone archway made of fragments.

A royal palace has existed on this site since at least 1299. Edmund of Langley, Duke of York and the fifth son of Edward III, was born here in 1341. The palace remained in use until the mid-15th century and was granted to the Duchess of York in 1469, after which it likely ceased to be used. The visible ruins may have been part of a house built after the crown lease was granted to Sir Charles Morrisson in 1580 and before 1591. This house remained until at least the late 17th century and was home to Lady Capel following her husband's execution by Oliver Cromwell.