Spaceports all over the world:  Many of them have guided tours
 

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Russia:
Plesetsk, Arkhangelskregionen. 
 
Kazakstan:
Kosmodrom in Bajkonur, (former Sovjet Unionvjetunionen). The first satellite was launched from here and so was the first man in space. 

French Guyana:
Centre Spatial Guyanais, the spaceport of ESA, in Kourou, French Guyana, close to the ekvator. 

Sweden:
Esrange, Kiruna, launch of sounding rockets and huge high-altitude balloons.  

USA:
Kennedy Space Center, Cape Canaveral, Florida. All Mercury, Gemini and Apollo-spacecraft where launched from here. So were the space shuttels. 

USA:
Vandenberg Air Force Base, Kalifornien.

USA:
Mojave Space Port, first commercial space port and the base for Scaled Composites 
 
Japan:
Tanegashima Space Center.

China: 
Xichang Satellite Launch Center.