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Creative studio DFA is proposing a 712-foot public observation tower in Central Park that would double as a sustainable filtration system to clean the hazardous Jacqueline Kennedy Onassis Reservoir and turn it into a non-toxic, useable freshwater pond. Though meant to be temporary, the prefabricated tower would be the world’s tallest timber structure if completed, featuring a 56-foot-wide viewing platform and a glass oculus that showcases the tower’s functional elements. — 6sqft
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The McMillan Sand Filtration Site is one of Washington, DC's most conspicuous mysteries. Unbeknownst to the thousands of commuters and residents that pass by its rusted gates daily, below this sprawling parcel of land lies a series of vast underground caverns built in the early 20th century by the Army Corps of Engineers as a natural purification facility for DC's turbid water supply. — Vimeo
The latest episode of PBS Digital Studios’ Unusual Spaces series visits mysterious abandoned silos and underground reservoirs at the McMillan Sand Filtration Site, just 2 miles north of Capitol Hill in DC. View full entry
