Fountain them. By the end of the 19th century, as indoor plumbing became the main source of drinking water, urban fountains became purely decorative. Mechanical pumps replaced gravity and allowed fountains to recycle water and to force it high into the air. The Jet d'Eau in Lake Geneva, built in 1951, shoots water in the air. The highest such fountain in the world is King Fahd's Fountain in Jeddah, Saudi Arabia, which spouts water above the Red Sea. Fountains are used today to decorate city parks and squares; to honor individuals or events; for recreation and for entertainment. A Splash pad
Diamond D-Jet D-JET. The landing gear is electrically-actuated on later-built prototypes; atypically, the landing gear is designed to be used as an air brake during landing approaches, being deployable at speeds as high as 200 knots. Manoeuvring on the ground was achieved via a nosewheel steering system, actuated via a mechanical linkage to the pedals. According to Diamond, the D-JET could be operated from 3,000-foot runways, ensuring that they are both dry and uncontaminated. Diamond D-Jet The Diamond D-JET is a composite, five-seat, single-engine Very light jet developed by Austrian aircraft manufacturer Diamond Aircraft Industries. The intended cost for the aircraft was