London's lost rivers, like the River Westbourne, now flow underground as sewers; remnants, such as an original iron pipe, remain near Sloane Square tube station.
In the late 19th century, crews dug culverts to convert Garrison Creek into a sewer, addressing population growth and pollution issues by the 1920s.
Once named Mosholu by the Lenape people, now flows underground through an arched brick sewer, with its only above-ground portion serving as a wetland in Van Cortlandt Park.
Sydney owes its location to a lost creek that provided fresh water for European settlers in the late 18th century, flowing from swampy high ground to Sydney Cove.
Once powering mills, succumbed to pollution, earning the nickname "Mucky Beck." Forced underground for around four miles, it reemerges in Shipley at the River Aire.
Explore Brescia's subterranean rivers, like the Bova-Celato, through guided tours by Brescia Underground, which even features a glass manhole cover for a view.
Once wild and powering mills, is now tamed by concrete channels, flowing through sewers into the Danube Canal.
The Saw Mill River, was gradually covered and capped in the early 20th century. Remarkably, it has been "daylighted" in the early 21st century, becoming a focal point.
Once winding prominently from Hampstead Heath to Blackfriars, was polluted and converted into a sewer in the 19th century, flowing mostly underground.
Once called "Little River", flowed through mills and factories before being buried up to 50 feet below the surface in the 1940s by the US Army Corps of Engineers.