The Earth at night
seen from United States

seen from United States
seen from China
seen from United States

seen from Malaysia
seen from Canada

seen from United States
seen from United States

seen from China
seen from Hungary
seen from United States
seen from South Korea
seen from United States
seen from United States

seen from T1

seen from T1

seen from T1

seen from Germany

seen from Malaysia

seen from T1
The Earth at night
Open space in the city
Source: Urban Observatory http://www.urbanobservatory.org/compare/index.html#.UlANrsIy_fE.tumblr
Foursquare check-ins show the pulse of San Francisco
Map of the 2100 Moscow Metro