The Neptune Grotto close to the Obelisk entrance in Sanssouci Park

Sanssouci Park

Sanssouci Park is a large park surrounding Sanssouci Palace in Potsdam, Germany. Following the terracing of the vineyard and the completion of the palace, the surroundings were included in the structure. A baroque flower garden with lawns, flower beds, hedges and trees was created. In the hedge...

, Potsdam

Potsdam

Potsdam is the capital city of the German federal state of Brandenburg and part of the Berlin/Brandenburg Metropolitan Region. It is situated on the River Havel, southwest of Berlin city centre....

, was created by Frederick the Great between 1751 and 1757 to beautify the park.

Built following plans by Georg Wenzeslaus von Knobelsdorff

Georg Wenzeslaus von Knobelsdorff

Hans Georg Wenzeslaus von Knobelsdorff was a painter and architect in Prussia.Knobelsdorff was born in Kuckädel, now in Krosno Odrzańskie County. A soldier in the service of Prussia, he resigned his commission in 1729 as captain so that he could pursue his interest in architecture...

 it arose as a representation of the revived interest in garden architecture. The grotto

Grotto

A grotto is any type of natural or artificial cave that is associated with modern, historic or prehistoric use by humans. When it is not an artificial garden feature, a grotto is often a small cave near water and often flooded or liable to flood at high tide...

 ought to have been a component of the numerous fountains of the park, which did not function at that time, owing to a lack of technical knowledge.

The trident

Trident

A trident , also called a trishul or leister or gig, is a three-pronged spear. It is used for spear fishing and was also a military weapon. Tridents are featured widely in mythical, historical and modern culture. The major Hindu god, Shiva the Destroyer and the sea god Poseidon or Neptune are...

 wielding god of the sea, Neptune

Poseidon

Poseidon was the god of the sea, and, as "Earth-Shaker," of the earthquakes in Greek mythology. The name of the sea-god Nethuns in Etruscan was adopted in Latin for Neptune in Roman mythology: both were sea gods analogous to Poseidon...

, establishes a relationship to water. The conches

Conch

A conch is a common name which is applied to a number of different species of medium-sized to large sea snails or their shells, generally those which are large and have a high spire and a siphonal canal....

 on the sides, arranged into the shape of waterfall

Waterfall

A waterfall is a place where flowing water rapidly drops in elevation as it flows over a steep region or a cliff.-Formation:Waterfalls are commonly formed when a river is young. At these times the channel is often narrow and deep. When the river courses over resistant bedrock, erosion happens...

s and the great shell inside, made from many real shells, are a characteristic theme of Rococo

Rococo

Rococo , also referred to as "Late Baroque", is an 18th-century style which developed as Baroque artists gave up their symmetry and became increasingly ornate, florid, and playful...

.