An important 18th century garden retreat was the Bath House.
At Walton the owner, Sir Charles Mordaunt chose a remote site beneath a natural spring. The architect, Sanderson Miller's neo-classical design had a dual purpose: to entertain in the upper room, while below, in a Romanesque-style grotto room, guests could take the health benefits of an indoor plunge pool. The Bath House was created around 1750.
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Mary Delany, was commissioned to decorate the walls of the upper tea-room with shell festoons. She was a shell collector and designed and decorated 9 grottoes. The 8 festoons are free flowing in their design and each one measures over 4 metres. She also designed the plaster 'icicles' that form a cornice around the entire room and on the ceiling. All work was done on boards off-site and later attached to the walls.
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Although the Bath House was still used for entertainment until the early 20th century by 1970 it was in a ruinous condition. The Land Mark Trust restored this highly important building and today guests can enjoy their own spa-retreat throughout the year!