Rhoon Castle

the Netherlands

Ribeaucourt Castle

Belgium

Riberhus

Denmark

Ribnik Castle

Croatia

Richard Bladworth Angus House

Canada

Richthofen Castle

the United States

Ridderborn Castle

Belgium

Rideau Hall

Canada

Riegersburg Castle

Austria

Complete

Rig castle

Iran

Riga Castle

Latvia

Preserved

Rignano sull'Arno

Italy

Rihemberk Castle

Slovenia

Rijkel Castle

Belgium

Ringnes

Norway

Ringstabekk

Norway

Rinkesta Castle

Sweden

Private residence

Rio Castle

Greece

Ottoman/Venetian period

Risøbank

Norway

Rivara Castle

Italy

Rivergaro

Italy

Rivieren Castle

the Netherlands

Rivieren Castle (''Kasteel van Rivieren'')

Belgium

Rivoli Castle

Italy

Riwa Fort

India

Robat castle

Iran

Robbio

Italy

Roborst Castle

Belgium

Rocca Abbaziale

Italy

Rocca Aldobrandesca

Italy

Rocca Aldobrandesca di Piancastagnaio

Italy

Rocca Borromeo di Angera

Italy

Rocca Brancaleone

Italy

Rocca Calascio

Italy

Rocca Costanza

Italy

Rocca Degli Alberi

Italy