Since Philadelphia is arranged on a grid system, the mostly one-way roads are easy to navigate. Helpful maps are posted along street corners across the city – watch for the "Walk! Philadelphia" signs ...

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Chicago's eastern boundary is formed by Lake Michigan, and the city is divided by the Chicago River into three geographic sections: the North Side, the South Side and the West Side. These sections ...

A section of a bridge on the Xiamen-Chengdu Expressway in Sandu county, Guizhou province, collapsed early Tuesday morning following a landslide. No casualties have been reported. The incident happened ...