| Cannes, St. Michael the Archangel Church | | | en, fr, pl, ru |
| Capitol Building, USA | | | en, lv |
| Cafe Nobar. Luton. England. | | | en |
| Capri, Villa Lysis | | | de, en, fr |
| Capri, Chiesa di Santo Stefano | | | en, lv |
| Castellfollit de la Roca | | | en, pl, ru |
| Chełm, Basilica of the Birth of the Virgin Mary | | | en, pl, ru |
| Château du Plessis-Bourré | | | en, lv, ru |
| Château de la Mothe-Chandeniers | | | de, en, fr, lv, pl, ru, ua |
| Chapel Street Nursery School. Luton. England. | | | en |
| Chernobyl Nuclear Power Plant | | | de, en, fr, lv, pl, ru, ua |
| Church of Saint-Pierre-Saint-Paul | | | en |
| Château du Haut-Koenigsbourg | | | en, ru |
| Château de Roquetaillade | | | en |
| Cinema Splendid Palace building, Riga | | | en, lv |
| City Hall, London | | | de, en, fr, pl, ru |
| Conington All Saints church | | | en |
| Cologne Cathedral | | | en, lv |
| Coastal Monastery of Saint Sergius | | | en |
| Covadonga | | | de, en, fr, lv, pl, ru, ua |