- Conference Centre Albert Borschette
- Rue Froissart 36, 1040, Brussels
- Congress Center Bremen, Germany
- Findorffstraße 101, Bremen
- Conservatoire national des arts et métiers
- 292 Rue Saint-Martin, Paris
- Consiglio Nazionale delle Ricerche
- Piazzale Aldo Moro, 7, Rome, Italy, 00185
- Convention Centre Pierre Baudis
- 11 Espl. Compans Caffarelli, Toulouse, 31000
- COP21 Site Le Bourget
- Le Bourget , Paris
- Copenhagen
- Ørestads Boulevard 114 - 118 2300 , København S
- Croke Park
- Jones' Rd, Dublin 3
- Crown Plaza Hotel
- Le Palace, Rue Gineste 3, Brussels
- Crowne Plaza Hotel
- Rue Gineste 3, Brussels
