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Archaeologists in Korea have uncovered the remains of multiple flushing toilets within a 1,300 - year - old castle complex . But there was one " toilet " to decree them all : The crown prince got a especial crapper that drain directly into a nearby river .

The existence of the castle complex has long been known , but raw dig are revealing more about it , including the discovery of the flush toilets .

an ancient toilet made out of stone blocks and a hole in the ground

The flush toilet that was likely used by the crown prince in what is now Korea.

" These wealthy toilets are the first of their kind , " at least in Korea , Kim Gyeong Yeol , an archeologist with the Korean Heritage Service who led digging at the site , tell Live Science in an e-mail . They would n’t have worked like innovative - day flushing privy do ; rather , someone , a handmaid perhaps , would have poured weewee into them to permit them to flush . The water would have then carry the wastefulness through a drain that vacate out at the goal .

Related:2,400 - class - old flush toilet unearthed in China could be one of the world ’s old

The throne

One of the can , found within the remains of the castle itself , " directly discharges human waste into the river through a drainage , " Kim said . Other affluent toilets , found outside the palace in nearby structures , stack away the human waste inside them , like how an outhouse works .

The can " that directly discharges it into the river seems to have a hierarchical substance , " Kim tell . This peculiar toilet may have been used by the crown prince and the court Lady penny-pinching to him , Kim said .

The name " Donggung " palace means " crown prince , " Kim read . It was built in A.D. 674 along with a pond call " Woji Pond , " according to theKorean Heritage Service . It was built at the startle of what historian call the " incorporate Silla " full point , from approximately A.D. 668 to 935 , when the Kingdom of Silla ruled much of the Korean Peninsula .

a close-up of the hole in the ground of an ancient toilet

(Image credit: Photo courtesy of Kim Gyeong Yeol)

former excavations have uncovered the corpse of at least 26 buildings at the web site , as well as legion artifacts let in bowl , plates and flower - pattern brick , the heritage service mention .

The crown prince ’s toilet drained into a river .

This picture shows part of the 1,300 - class - sometime Donggung Palace in Korea .

A view of an archaeological site with multiple rooms and stone blocks

(Image credit: Photo courtesy of Kim Gyeong Yeol)

Who flushed first?

— Who invented the can ?

— What did hoi polloi expend before toilet theme was invented ?

— A rare 2,700 - year - old luxuriousness toilet find in Jerusalem

Photograph looking down a short set of marble stairs into a narrow, empty pool with an apsidal end

While a first for Korea , these affluent toilets are not the first ones invented . TheIndus Valley Civilization , base in what is now Pakistan , had cities with flush toilets , a squad of investigator wrote in a 2016paper . This civilization prosper between 2600 and 1900 B.C. , around the time whenpyramids were being built in Egypt . The flush toilet in the Indus Valley put the barren into a series of drain that emptied out in a sewerage system , the newspaper publisher reported .

The English , who are sometimes credited with manufacture the first modern moneyed toilets , did n’t develop flush potty until much later . Sir John Harrington cook up a machine in 1596 for Queen Elizabeth I " that let go waste into cesspool , an early version of the modern - day toilets , " the squad noted in the study . However , itlacked an south - bend , meaning that smells could have wafted back into the room , and took 7.5 gallon ( 28 liters ) of water to scour .

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