Czech Center - London
The British branch of the Czech tourism authority with information that has been specially tailored for local consumption.
http://www.czechcentres.cz/london/
http://www.czechcentre.org.uk/

Czech Center - New York
Promotes the Czech Republic in America, particularly in the areas of of business, culture, education and tourism.
http://www.czechcentres.cz/newyork/

Czech Tourism.com
Website of the national tourist office.
http://www.czechtourism.com/
http://www.visitczech.cz/

Prague Information Server
Website of the city administration.
http://www.praha-mesto.cz/

Prague Information Service
Official source of tourist information about the city.
http://www.pis.cz/