A bike lock that only a monkey could pick.
The distinctive Arabic typography created for the Burj Khalifa.
A team shows off its invention, which would make underground parks possible.
A haunting and poetic portrayal of what was then seen as the city of the future.
Worried your new iPhone 5 will be the object of thieves? What if it came with a small utility blade?
White roofs help bring down the heat, but researchers worry they could also stop the rain.
The capital of Ecuador has one of the best-preserved city centers in Latin America.
The city's population is expected to mushroom to 9.1 million by 2030. Here's a novel way to accommodate that growth.
Leagues are taking an impressive range of innovative and cost-effective steps toward sustainability.
Is this still a good idea?
This swanky avian domicile can fit up to 78 finch families – and one human voyeur.
It's been more than two years since Columbia University professor Kate Orff made waves with her "Oyster-tecture" proposal. She's still pushing.
Long-time city photographer Steven Siegel recalls one of his favorite subjects, the World Trade Center.
The visionary architect imagines metropolises built like vast orchards.
One couple's quest to find serenity in "the wilderness" of Staten Island.
Great public art, or the setup for a hilarious jet-ski accident? You be the judge.
A new book aims to repair the reputation of the much-maligned composite.
Jack Boucher spent his life preserving historic buildings with his camera.