GeoGraph - photograph every grid square

Built in the 1760's during the refurbishment of the gardens the Grotto was a boathouse with a facade of a grotto with a room above the boat dock decorated with coloured glass and flourespar set in the walls and ceilings. There were candles set in alcoves with mirrors set behind to reflect the light and the floor was set with geometric patterns of coloured pebbles. there were two fires in the early 1900's which turned the building into an attractive ruin.