Built to Last

Florence Cathedral: How Brunelleschi Built a Dome Without Timber Centering

CN Tower: How Canadian Engineers Poured Concrete Non-Stop for 40 Months to Build the World's Tallest Free-Standing Structure

Burj Al Arab: How Dubai Drove 9,000 Piles Into the Seabed to Build a Sail-Shaped Hotel on a Man-Made Island

Guggenheim Bilbao: How Frank Gehry Used Aerospace Software to Build a Titanium Museum That Saved a City

Brooklyn Bridge: How a Ferry Accident, Caisson Disease, and a Wire Fraud Scandal Built New York's Most Iconic Span

Golden Gate Bridge: How 4,000 Workers Spun 80,000 Miles of Wire and Bridged San Francisco's Unbridgeable Bay

Hoover Dam: How 21,000 Depression-Era Workers Tamed the Colorado River — With 582 Miles of Cooling Pipe and Sheer Human Grit

Chrysler Building: How William Van Alen Hid a 185-Foot Steel Crown Inside the Tower — and Raised It in 90 Minutes to Steal the Sky

Fallingwater: How Frank Lloyd Wright Cantilevered a House Over a Waterfall — In Just One Weekend

Chichen Itza: How the Maya Encoded 365 Days into Stone — and Built a Shadow-Serpent That Appears Twice a Year

Alhambra: How the Last Muslim Dynasty of Europe Built a Palace of Water, Light, and 5,000 Honeycomb Cells

Petra: How the Nabataeans Carved a City from Rose-Red Rock — With Water, Chisels, and 500 Years