Architecture resembling a drop in a river's course
An artificial waterfall is a water feature or fountain which imitates a natural waterfall.
Artificial waterfalls have long been featured in traditional Japanese gardens, where they can serve to highlight a scene or to provide focus. The classic gardening manual "Sakuteiki", written in the mid-to-late 11th century, lists nine different types. The Cascata delle Marmore is an example of a human-made waterfall created by the ancient Romans.
Artificial waterfalls were popular in Europe in the late 19th and early 20th centuries, including the famous waterfall in Viktoriapark in Berlin. An early American example is Huntington Waterfalls in Golden Gate Park, San Francisco, California. In 1896, "Gardening Magazine" reported that it was the only artificial waterfall in a public park in North America.
The Liebian International Plaza in Guiyang, Guizhou, China has a waterfall on one face of the mixed-use skyscraper.
The New York City Waterfalls (2008), a temporary public art installation by artist Olafur Eliasson, consisted of four human-made waterfalls constructed with 270 tons of exposed scaffolding.
Indoor waterfalls.
Artificial waterfalls installed inside of buildings can be small or quite large. Some of the benefits of indoor waterfalls are considered to be their production of white noise, humidity, as well as naturally peaceful feelings engendered among onlookers. 
Two notable indoor waterfalls in the world are both located in Singapore; the largest indoor waterfall in Singapore is The Rain Vortex at Jewel Changi Airport (opened in 2019) whilst the second-largest indoor waterfall in Singapore is the Cloud Forest at Gardens by the Bay (opened in 2012).
References.
 ;templatestyles src="Reflist/styles.css" / ;