Wales: Harlech Castle
- Location: Harlech, Wales
- Founded: King Edward II, 13th century
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Belgium: Gravensteen
- Location: Ghent, Belgium
- Founded: Count Philip, 12th century
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England: Tower of London
- Location: London, England
- Founded: King William I, 11th century
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Italy: Castel del Monte
- Location: Aquila, Italy
- Founded: Emperor Frederick II, 13th century
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Germany: Burg Eltz
- Location: Münstermaifeld, Germany
- Founded: 12th century
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Scotland: Caerlaverock Castle
- Location: Dumfries, Scotland
- Founded: King Edward I, 13th century
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France: Cité de Carcassonne
- Location: Carcassonne, France
- Founded: King Louis IX, 12th century
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Netherlands: Muiderslot
- Location: Muiden, Netherlands
- Founded: Count Floris V, 13th century
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Spain: Alcazar de Segovia
- Location: Segovia, Spain
- Founded: King Alfonso VI, 11th century
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Information Credit (all of the above): Top 100 Castles Medieval Castles (Rongen)
Photograph Credit (all of the above): Flickr (Flickr)
Note: Click on any image above to see the original version at Flickr.