Fort Queyras, France

100 piece Classic

Photo: @lain G

Fisherman’s Bastion, Hungary

100 piece Classic

Photo: Dennis Jarvis

Chateau de Puymartin, France

150 piece Classic

Photo: Vincent van der Pas

Marienberg Fortress, Wuerzburg, Germany

150 piece Classic

Photo: Abhijeet Rane

Eilean Donan Castle, Scotland

100 piece Classic

Photo: Miguel Ángel Arroyo Ortega

Boeing B-17G Flying Fortress

150 piece Classic

Photo: D. Miller

Rumeli Hisari Fortress, Turkey

150 piece Classic

Photo: Dennis Jarvis

Marienberg Fortress, Germany

150 piece Classic

Photo: Frank Kovalchek

Marienberg Fortress, Germany

50 piece Classic

Photo: Frank Kovalchek

Kamerlengo Fortress, Croatia

100 piece Classic

Photo: Ahenobarbus

Kamianets Podilskyi Fortress

100 piece Classic

Photo: Ferad Zyulkyarov

Ivangorod Fortress

150 piece Classic

Photo: Ahenobarbus

Alhambra Fortress, Granada

100 piece Classic

Photo: James Gordon

Fortress Marienberg

150 piece Classic

Photo: Jiuguang Wang

Ilz, Danube, and Inn Rivers

200 piece Classic

Photo: B K

Südtirol, Italy

150 piece Classic

Photo: Allie Caulfield

Slot Loevestein, Netherlands

100 piece Classic

Photo: Anita

Akershus Fortress, Oslo, Norway

150 piece Classic

Photo: Jim G

Bolzano, Italy

150 piece Classic

Photo: Allie Caulfield

Alcázar de Toledo, Spain

100 piece Classic

Photo: Francisco Javier Martín Fernández

Eilean Donan castle, Scottish Highlands

100 piece Classic

Photo: Eusebius@Commons

The Castle of Kos, Greece

150 piece Classic

Photo: Robin

Castillo de San Servando, Toledo, Spain

100 piece Classic

Photo: Francisco Javier Martín Fernández

San Marino

100 piece Classic

Photo: Fdecomite

Rome, Italy

150 piece Classic

Photo: Allie Caulfield

The Walls of Alanya Dockyard

50 piece Classic

Photo: Robin & Bazylek

Nimrod Fortress

150 piece Classic

Photo: David King

Salzburg

200 piece Classic

Photo: Allie Caulfield

Salzburg, Festung Hohensalzburg

150 piece Classic

Photo: Allie Caulfield

Salzburg - Schloss Mirabell and Festung Hohensalzburg

100 piece Classic

Photo: Andrew Bossi

The Castle of Belogradchik, Bulgaria

100 piece Classic

Photo: Klearchos Kapoutsis

Salzburg - View from Festung Hohensalzburg

150 piece Classic

Photo: Andrew Bossi

Salzburg, Schloss Mirabell Garden

150 piece Classic

Photo: Andrew Bossi

Salzburg, Schloss Mirabell

150 piece Classic

Photo: Andrew Bossi

Salzburg, Festung Hohensalzburg

100 piece Classic

Photo: Andrew Bossi

Trakai Castle, Lithuania

100 piece Classic

Photo: Boris Bartels

Mansfield Castle Hotel, Tain Scotland

200 piece Classic

Photo: Dave Conner

Mansfield Castle Hotel, Tain Scotland

100 piece Classic

Photo: Dave Conner