Water bodies in parks create not only aesthetic, but also more favorable ecological, microclimate conditions for plants, provide impressions of life and surprise. The pond system of Lentvaris Manor Park is full of various solutions and elements. The play of water is exhibited in various forms. A winding path along the water flow invites you to travel to the grand cascade with a "water curtain". The creators of the park knew how to create and imitate the image of a natural mountain stream that provides a lot of refreshment for the eyes and ears.

The internal water system of the park and the Great Cave structure and view have little changes since its creation at the end of 19th century.