Video The Midtown Conversion That Suddenly Became a Structural Emergency A buckling-column scare at the former Pfizer headquarters turned one of New York's biggest office-to-apartment conversions into a warning about structural reuse.
Video The $238 Million Apartment Tower That Treated Buyers Like Applicants 220 Central Park South sold the most expensive home in America by combining Central Park frontage, pencil-tower engineering, and extreme buyer control.
Video The Tower That Invented Billionaires' Row, Then Exposed Its Risk One57 proved that Central Park views could sell for nine figures. It also showed what happens when a luxury tower becomes a speculative market.
Video The Skyscraper Built Inside a Landmark Shell Hearst Tower solved an old New York problem by preserving a 1928 landmark base while building a 46-story diagrid tower through it.
Video How 56 Leonard Became New York's Jenga Tower 56 Leonard looks like a stack of blocks, but its irregular apartments depend on air rights, walking columns, hidden trusses, and a water tank at the top.
Video The Twisting Towers That Turned Views Into Value One High Line's two towers twist away from each other to create more separation, better light, and more Hudson River views.
Architecture The Building That Helped Break Cooper Union's Free-Tuition Promise 41 Cooper Square was designed as a bold, green, world-class academic building. It also became tangled in the financial story that ended Cooper Union's century-and-a-half tuition-free tradition.
Video America's Tall Ship Was Built by Nazi Germany USCGC Eagle trains future Coast Guard officers under sail, but the ship began life as Horst Wessel, a German naval training vessel taken after World War II.
Video Google's Manhattan Groundscraper Built on a Freight Terminal St. John's Terminal gave Google something rare in Manhattan: enormous horizontal floors where a headquarters could grow out instead of up.
Video The Castle on Central Park West Built for Cancer Patients The New York Cancer Hospital looked like a French chateau because treating cancer in the 1880s required medicine, money, architecture, and persuasion.
Video Why Times Square Buildings Are Required to Wear Billboards Times Square's lights are not just advertising chaos. New York zoning requires major buildings in the district to carry large illuminated signs.
Video Air Conditioning Was Invented to Save a Brooklyn Print Job Willis Carrier's first modern air-conditioning system was not built for human comfort. It was built to stop humid Brooklyn air from ruining magazine printing.