| Casa de Cultura | Casa de Cultura | Spain, San Lorenzo de El Escorial, C/ Floridablanca 3. | 2005-11-26 | 2005-11-26 | 2005 | 1 | |
| Casa de Cultură a Studenților | Casa de Cultură a Studenților | Romania, Cluj-Napoca, Piaţa Lucian Blaga 1-3 | 2012-04-20 | -- | 2012 | 1 | |
| Casa de Cultura de Tobarra | Casa de Cultura de Tobarra | Spain, Tobarra, Albacete, Av. Juan Carlos I, 16 | 1993-01-02 | -- | 1993 | 1 | |
| Casa de Cultură Miercurea Ciuc | Casa de Cultură Miercurea Ciuc | Romania, Miercurea Ciuc | 2018-05-06 | 2018-05-06 | 2018 | 1 | |
| Casa de Cultura Teodoro Cuesta | Casa de Cultura Teodoro Cuesta | Spain, Mieres, Calle Manuel Llaneza, 8 | 2008-10-29 | 2015-03-05 | 2008–2015 | 2 | |
| Casa de la Juventud | Casa de la Juventud | Spain, Colmenar Viejo | 1991-06-13 | -- | 1991 | 1 | |
| Casa del Lago Juan José Arreola | Casa del Lago Juan José Arreola | Mexico, México City, D.F. | 2007-05-11 | 2007-05-26 | 2007 | 1 | |
| Casa del Marino | Casa del Marino | Spain, Palmas de Gran Canaria | 1966-02-03 | -- | 1966 | 1 | |
| Casa della Participazione | Casa della Participazione | Italy, Maccarese, Via del Buttero, 10, 00057 | 2019-11-29 | -- | 2019 | 1 | |
| Casa Municipal de Cultura (Paraninfo Universitario) | Casa Municipal de Cultura (Paraninfo Universitario) | Bolivia, Santa Cruz de la Sierra, Junín 151 | 2004-03- | -- | 2004 | 1 | |
| Casa Municipal de la Cultura de Lugones | Casa Municipal de la Cultura de Lugones | Spain, Lugones, Calle de Leopoldo Lugones, 12 | 2014-08-25 | -- | 2014 | 1 | |
| Casa Teatro Ragazzi | Casa Teatro Ragazzi | Italy, Torino, Corso Galileo Ferraris n. 266 10134 - Torino | 2014-05-23 | -- | 2014 | 1 | |
| Casal | El Casal | Spain, Tàrrega | 1993-09-11 | 1993-09-11 | 1993 | 1 | |
| Caserma d'artiglieria di Porta Verona | Caserma d'artiglieria di Porta Verona | Italy, Pescheria del Garda, Parco Catullo, 4, 37019 Peschiera del Garda VR, Italy | 2023-08-22 | -- | 2023 | 1 | |
| Casino | Casino | Netherlands, Den Bosch | 1956-11-19 | 1989-04-02 | 1956–1992 | 3 | |
| Casino | Casino | Denmark, Slagelse | 1907-12-11 | -- | 1907 | 2 | |
| Casino | Casino | Norway, Stjørdal | 1952-03-09 | -- | 1952–1960 | 4 | |
| Casino de Montbenon, Le | Le Casino de Montbenon | Switzerland, Lausanne, Allée Ernest-Ansermet 3 | 2008-09-10 | 2008-09-13 | 2008 | 1 | |
| Casino Du Brassus | Casino Du Brassus | Switzerland, Le Chenit, Route de France 2 | 2018-11-25 | -- | 2018 | 1 | |
| Casino Llanes | Casino Llanes | Spain, Llanes, Calle Castillo, 3 | 2017-04-21 | -- | 2017 | 1 | |
| Casino Republicà (Barceloneta) | Casino Republicà (Barceloneta) | Spain, Barcelona | 1918-01-06 | -- | 1918 | 1 | |
| Casino Teater | Casino Teater | Denmark, Ringsted | 1907-12-12 | -- | 1907 | 1 | |
| Casino Théâtre | Casino Théâtre | Switzerland, Geneva, Rue de Carouge 42 | 2000-05-23 | 2000-05-27 | 2000 | 1 | |
| Casino-Theater | Casino-Theater | Switzerland, Burgdorf, Kirchbühl 14 | 2008-02-07 | 2016-03-17 | 2008–2019 | 5 | |
| Casino-Theater | Casino-Theater | Switzerland, Frauenfeld | 1980-03-05 | -- | 1980–2019 | 3 | |
| Casinos Lille Teater | Casinos Lille Teater | Denmark, Copenhagen | -- | -- | | | |
| Casinoteatret | Casinoteatret | Denmark, Copenhagen, Amaliegade 10 | 1861-12-06 | 1907-05-15 | 1861–1931 | 10 | 1 |
| Cass Theatre | Cass Theatre | United States of America, Cass City, 6464 Main Street | 1937-10-17 | -- | 1937 | 1 | |
| Castello Maniace | Castello Maniace | Italy, Siracusa, Isola di Ortigia | 2007-09-23 | -- | 2007 | 1 | |
| Castellum Theater | Castellum Theater | Netherlands, Alphen aan Den Rijn, Rijnplein 3 | 2009-11-26 | -- | 2009 | 1 | |
| Castillo de Doña Berenguela | Castillo de Doña Berenguela | Spain, Bolaños de Calatrava | 1975-07- | -- | 1975 | 1 | |
| Castle, the | The Castle | England, Wellingborough, 10 Castle Way | 2011-03-31 | 2014-10-22 | 2011–2014 | 3 | |
| Castrop-Rauxel Studio | Castrop-Rauxel Studio | Germany, Castrop-Rauxel, Europaplatz | 2017-02-14 | 2017-11-29 | 2017 | 1 | |
| Caţa | Caţa | Romania, Caţa | -- | -- | | | |
| Catania | Catania | Italy, Catania | 1892-06-23 | 1892-06-28 | 1892–1897 | 2 | |
| Catharinakapel | Catharinakapel | Netherlands, Harderwijk, Klooster 1 | 2005-01-07 | -- | 2005 | 1 | |
| Cathinka Guldberg-senteret | Cathinka Guldberg-senteret | Norway, Oslo, Lovisenberggata 7B | 2006-10-31 | -- | 2006 | 1 | |
| Caxton Theatre Grimsby | Caxton Theatre Grimsby | England, Grimsby, Cleethorpe Road Great Grimsby | 1985-02-07 | -- | 1985 | 1 | |
| CC ´t Bruggeske | CC ´t Bruggeske (Cultuurcentrum Bruggeske Kapellen) | Belgium, Kapellen, Dorpsstraat 45 | 2006-12-06 | -- | 2006 | 1 | |
| CC Achterolmen | CC Achterolmen (Cultuurcentrum Achterolmen) | Belgium, Maaseik, Van Eycklaan 72 | 2006-11-30 | -- | 2006 | 1 | |
| CC Adelberg | CC Adelberg | Belgium, Lommel, Adelbergpark 1 | 1998-12-19 | -- | 1998–2007 | 2 | |
| CC Bilzen | CC Bilzen | Belgium, Bilzen | 1998-10-24 | -- | 1998 | 1 | |
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