Video Why New York Still Uses Wooden Water Towers New York's rooftop water tanks look old-fashioned, but they solve a pressure problem that gravity alone cannot handle above about six stories.
Video Why New York Still Has So Few Public Bathrooms New York's public bathroom shortage is not just an inconvenience. It is the result of old comfort stations, fiscal crisis closures, maintenance costs, design failures, and slow public construction.
Video The USS Intrepid Survived War, Then Got Stuck in Hudson River Mud The aircraft carrier Intrepid survived kamikaze attacks, a torpedo strike, Vietnam service, and NASA recovery missions. In 2006, its hardest opponent was 17 feet of Hudson River mud.
Video The Woolworth Building Had to Invent a Way to Fight the Wind When the Woolworth Building became the tallest building in the world, its engineers had to solve wind forces with a bracing system tailored to its strange shape.
Video Why the American Copper Buildings Lean Toward Each Other The American Copper Buildings look like two towers bending in the wind, but the lean helps make their three-story skybridge possible.
Video The Old Electrical Rooms Keeping the Subway Alive New York's subway depends on hundreds of traction power substations that convert grid power into third-rail electricity. Some are old enough to become a service risk.
Video Why Your Ears Usually Do Not Pop in a Skyscraper Elevator High-speed elevators move fast enough to change air pressure, but engineers design the ride so your ears can usually keep up.
Video The Tiny Sidewalk Triangle That Refused to Become Public Property The Hess Triangle is only about 500 square inches, but the mosaic in the West Village preserves a century-old fight over eminent domain and Seventh Avenue.
Video One World Trade Center Is a Skyscraper Shaped by Security One World Trade Center kept the symbolic 1,776-foot height from the original master plan, but its final form was transformed by security, leasing, and engineering demands.
Video Why New York's Taxis Are Yellow New York's yellow taxis come from a mix of early taxi marketing, visibility logic, and a late-1960s rule meant to separate licensed cabs from illegal street-hail cars.
Video The Leaning Tower That Shows What Lower Manhattan Is Built On 161 Maiden Lane is an unfinished leaning skyscraper on Manhattan's reclaimed shoreline, where foundation choices matter because the ground is partly made land.
Video The Flatiron Building Was Iconic Before It Was Practical The Flatiron Building became one of New York's most beloved landmarks despite a triangular site, wind problems, awkward interiors, and years of vacancy.