Paris

Flickr user: brunosan, under a Creative Commons license

The World's Best Subway Maps

20 mass transit maps worthy of hanging on your wall

REUTERS/John Gress

The Joy of Parking in Chicago

In a global survey of 20 cities, finding a spot ranks toughest in New Delhi, easiest in the Windy City

Flickr user gsgeorge, licensed under Creative Commons

Descendants of the High Line

Four urban elevated railroad parks in progress

Still from 'Sub City Paris,' by Sarah Klein and Tom Mason

Sub City: If Only All Commutes Were This Serene

A pair of New York-based filmmakers marvel in, and just above, the underground

Contemporary Paris and the Nazi occupation of 1940, overlapped with WhatWasThere.com

Create Your Own Historical Maps with WhatWasThere

New website combines vintage photography with Google Street View

Yuriko Nakao, Reuters

The 25 Most Economically Powerful Cities in the World

Most of the world's capacity for economic growth is centered in its metro areas. Which cities top the list?