Behind the Grand Palace are the relatively small Upper Gardens. Upon the face of the bluff below the Palace lies the Grand Cascade. The Grand Palace and the Upper Gardens is the centerpiece of the entire complex. At its foot begins the Sea Channel which bisects the Lower Gardens. It is one of the most extensive waterworks of the Baroque period. You can also see at the center of the cascade an artificial grotto with two stories, faced inside and out with hewn brown stone.

- Trevi Water Fountain
- The Swann Memorial Fountain
- Buckingham Water Fountain
- Fontana dei Quattro Fiumi
- Peterhof Water Gardens
- Villa d'Este Water Fountain
- The German Fountain
- Jet d'Eau Water Fountain
- Trafalgar Square Water Fountain
- Fountain of Wealth
- Tyler Davidson Fountain
- Triton Water Fountain
- Fountain of Nations
- Flora Water Fountain
- Bellagio Water Fountain

It is said that the greatest technological achievement of Peterhof is that all of the fountains operate without the use of pumps. Water is supplied from natural springs and collects in reservoirs in the Upper Gardens. The pressure that drives most of the water fountains of the Lower Gardens, including the Grand Cascade comes from the elevation difference. The Samson Fountain is supplied by a special aqueduct which is over four km in length. And it draws water and pressure from a high-elevation source.
Although many trees are overgrown, you can still see the expanse of the Lower Gardens designed in a formal (French) fashion. It’s good news that in the recent years the formal clipping along the many allees has resumed in order to restore the original appearance of the garden. In addition, the many fountains located here exhibit which can be seen in one of the most notable designs entitled 'The Sun'. A disk radiating water jets from its edge creates an image of the sun's rays, and the whole structure rotates about a vertical axis so that the direction in which the "sun" faces is constantly changing.
In addition to the unusual creativity depicted in the water fountains, several water fountains are designed with the specific purpose of soaking visitors. Two take the form of gangly trees rigged with jets that activate when someone approaches. Another, disguised as an umbrella with a circular bench set around the stem, drops a curtain of water from its rim when someone enters to take a seat.