Copertino Castle

Italy

Coplean

Romania

Coral Castle

the United States

Corfu (city)

Greece

Corjuem Fort

India

Corneliano Bertario

Italy

Corniglio

Italy

Coronini

Romania

Cortewalle Castle

Belgium

Corunca

Romania

Corund

Romania

Corvin Castle

Romania

Cosenza

Italy

Costigliole d'Asti

Italy

Couwelaer Castle

Belgium

Covăsânț

Romania

Cowd Castle or Choud

Ireland

Cozzo

Italy

Coștiui

Romania

Craguie

Canada

Craigdarroch Castle

Canada

Cranganore Fort

India

Cranston Street Armory

the United States

Crevenish Castle

Ireland

Cristeștii Ciceului

Romania

Cristur-Șieu

Romania

Crizbav

Romania

Criș

Romania

Crom Castle

Ireland

Croy Castle

the Netherlands

Crupet Castle

Belgium

Crèvecœur Castle

Belgium

Csernovics Castle

Romania

Csesznek Castle

Hungary

Csikling Castle

Hungary

Csobánc Castle

Hungary