As iconic as anything above ground, these subway platforms leave riders with an added sense of the city they serve.
To Antony Wood's mind, the future of cities is vertical, replete with super-tall buildings, rooftop parks and, yes, lots of skybridges.
Researchers have proposed a number of theories over the years — from sensory overload to the economic value of time.
New York tops the Economist's new list of competitive cities.
A condom company is developing products for sexual privacy in this ultra-dense city-state, such as a screen that fits over car windows to make the vehicle look empty.
In The Spirit of Cities, author Daniel A. Bell tries to capture a city's essence, in brief
Geographer Joel Kotkin says the bigger problem is low birth rates in developed countries
A new study makes the fundamental case for congestion pricing
Most of the world's capacity for economic growth is centered in its metro areas. Which cities top the list?