A description from 1784 by Johann says
‘...one arrives at a large open space, where on one side there is green trellis-work with a large portal and six large alcoves in which seats are placed. Within the large portal is a very large rose-coloured water basin mottled with white; above this two little children sit upon a whale from which the water trickles into the basin.’
The trellis-work mentioned in this excerpt was replaced with the iron fencing around 1820/30. The presumably original shell-shaped basin, which was transferred from the Renaissance palace of Neugebäude in Simmering (located in the southern outskirts of Vienna), was removed for reasons of conservation in the mid-1990s and replaced with a replica.