The Waterloo Tower was built in gothic style c.1815-20 to commemorate the battle of Waterloo. It was part of a series of improvements in the park at Wynnstay. It was designed as a viewing point and lodge serving a drive (now lost) cut through rock immediately west of the tower. It is probably the work of Benjamin Gummow, architect, of Wrexham.

It is asymmetrically composed for picturesque effect, the Tower has a square base with plinth, and slender tapering octagonal upper stages, over a moulded string course which continues the line of the cornice of the accommodation blocks. There is scallop moulding to the machicolated and embattled parapet. The main accommodation block is 3-storeyed, with small-paned cast-iron windows with drop-ended hood moulds. The first floor is emphasised by a larger, 3-light window which has segmentally arched lights. The south length incorporates a 'mock turret' canted out from the line of the wall.

Reference: Cadw listed buildings database.
RCAHMW, 2010.