
The Tower of London, 1864.
The Tower of London (museum title)
David Roberts (British), watercolor, pen and gray ink, graphite, and gouache on paper
Yale Center for British Art, United States
100 works by 34 artists
100 works featuring “Fortress” by 34 artists, from the 15th to the 20th century, held in 39 museums.

The Tower of London (museum title)
David Roberts (British), watercolor, pen and gray ink, graphite, and gouache on paper
Yale Center for British Art, United States

수원화성문 (museum title)
Na Hye-sok (Korean)
Korea Copyright Commission, Corée du Sud

Morlaix, Entrance of the River (museum title)
Paul Signac (French), black crayon and watercolor
Metropolitan Museum of Art, United States

Tengerparti város (museum title)
Tivadar Csontváry Kosztka (Hungarian), oil on canvas
Hungarian National Gallery, Hungary

Sound of the Lake at Rinkai (museum title)
Katsushika Hokusai (Japanese), woodblock print; ink and color on paper
Metropolitan Museum of Art, United States

Vue de Tanger à partir du bord de la mer (museum title)
Eugène Delacroix (French), oil on canvas
Minneapolis Institute of Art, United States

Magnus Stenbock overgiver fæstningen Tønningen til Frederik… (museum title)
Nicolai Abildgaard (Danish), oil on canvas
Statens Museum for Kunst, Denmark

"Mut: Viapori - pois se nimi pois, se rauhan rikkoo… (museum title)
Albert Edelfelt (Finnish), ink on paper
Finnish National Gallery, Finland

Ibreem (museum title)
Edward Lear (British), watercolor, graphite, pen and brown ink and white gouache on wove paper
Yale Center for British Art, United States

Viapori-runon alkukirjain V (museum title)
Albert Edelfelt (Finnish), ink on paper
Finnish National Gallery, Finland

Christian IV grunnlegger Christiania. Skisse (museum title)
Adolph Tidemand (Norwegian), oil on canvas, mounted on cardboard
National Museum of Norway

Zrínyi Miklós szigetvári kirohanása előtt (vázlat) (museum title)
Viktor Madarász (Hungarian), oil on canvas
Hungarian National Gallery, Hungary

View of a Hilltop Town in Italy or Spain (museum title)
Adrien Dauzats (French), drawing
Rijksmuseum, Netherlands

Map of Imola (museum title)
Leonardo da Vinci (Italian)
Royal Collection, United Kingdom

Evening Glow at Jungai (museum title)
Katsushika Hokusai (Japanese), woodblock print; ink and color on paper
Metropolitan Museum of Art, United States

View of Toledo (museum title)
Le Greco (Spanish), oil on canvas
Metropolitan Museum of Art, United States

Bellinzona vue du Sud (museum title)
J. M. W. Turner (British), watercolor
British Museum, United Kingdom

Olavinlinna (museum title)
Ellen Thesleff (Finnish), print
Finnish National Gallery, Finland

Paysage de la vallée de l'Arno (museum title)
Leonardo da Vinci (Italian), ink and pen on paper
Uffizi Gallery, Italy

Udsigt fra Kalkbrænderiet i København (museum title)
C.W. Eckersberg (Danish), oil on canvas
Nationalmuseum, Sweden

Le siège d'une forteresse (museum title)
Albrecht Dürer (German), print
Cleveland Museum of Art, United States

Morze (museum title)
Aleksander Gierymski (Polish), oil on canvas
National Museum in Warsaw, Poland

View across a Bay (Monaco) (museum title)
Edward Lear (British), gray and black wash on card
National Gallery of Art, United States

Varbergs fästning (museum title)
Richard Bergh (Swedish), oil on canvas
Nationalmuseum, Sweden

Joseph Mallord William Turner - Bellinzona from the Road to… (museum title)
J. M. W. Turner (British), watercolor on paper
Aberdeen Archives, Gallery and Museums collection, United Kingdom

Le Château des Papes à Avignon (museum title)
Paul Signac (French), oil on canvas
Musée d'Orsay, France

Villefranche Harbour (museum title)
Eugène Boudin (French), oil on canvas
National Galleries of Scotland, Edinburgh, United Kingdom

Udsigt fra Kronborg Vold over flagbatteriet og Sundet til… (museum title)
C.W. Eckersberg (Danish), oil on canvas
Statens Museum for Kunst, Denmark

Collioure. La Plage de la ville. Opus 165 (museum title)
Paul Signac (French), oil on canvas
Metropolitan Museum of Art, United States

Codex Atlanticus (F1084) (museum title)
Leonardo da Vinci (Italian)
Bibliothèque Ambrosienne, Italy

Huy on the Meuse on the Road to the Rhine (museum title)
Maurice Cullen (Canadian), oil on canvas
Canadian War Museum, Canada

6호 (museum title)
Na Hye-sok (Korean)
Korea Copyright Commission, Corée du Sud

Tour des Pisans à Jérusalem (museum title)
Adrien Dauzats (French), lithograph
Rijksmuseum, Netherlands

Rébecca enlevée par le Templier (museum title)
Eugène Delacroix (French), oil on canvas
Department of Paintings, Louvre Museum, France

Villeneuve-lès-Avignon, fort Saint André (museum title)
Camille Corot (French), oil on canvas
Mesdag Collection, Netherlands

Fortitude (museum title)
Pieter Bruegel the Elder (Dutch), pen and brown ink on paper
Museum Boijmans Van Beuningen, Netherlands

Bortførelsen. Ridende par, i baggrunden borg eller slot (museum title)
Wilhelm Marstrand (Danish), drawing
Statens Museum for Kunst, Denmark

Noite de luar em Montevidéu (museum title)
Edoardo De Martino (Italian), oil on canvas
National Historical Museum, Rio de Janeiro, Brazil

Camille et le maître d'école de Faliéries (museum title)
Nicolas Poussin (French), oil on canvas
Norton Simon Museum, United States

Kronborg set fra Marienlyst (museum title)
C.W. Eckersberg (Danish), pencil
Statens Museum for Kunst, Denmark

Arabes escarmouches dans les montagnes (museum title)
Eugène Delacroix (French), oil on canvas
National Gallery of Art, United States

Christiania anno 1686 (museum title)
Adolph Tidemand (Norwegian), pen on paper
National Museum of Norway

The Alcazaba from the Mole, Malaga (museum title)
David Roberts (British), watercolor and gouache on paper
Yale Center for British Art, United States

Indsejlingen til det gamle havnebassin i La Rochelle (museum title)
Paul Signac (French)
Statens Museum for Kunst, Denmark

Fortitude (museum title)
Pieter Bruegel the Elder (Dutch), engraving
Rijksmuseum, Netherlands

The Fortifications at Antibes (museum title)
Eugène Boudin (French), oil on canvas
Nottingham Castle Museum and Art Gallery, United Kingdom

Camille livre le maître d'école de Faléries à ses écoliers (museum title)
Nicolas Poussin (French), oil on canvas
Department of Paintings, Louvre Museum, France

Nau Pedro I (museum title)
Edoardo De Martino (Italian), oil on canvas
Naval Museum (Rio de Janeiro), Brazil

Båtbyggere, Drøbak (museum title)
Hans Gude (Norwegian), pen and pencil on paper
National Museum of Norway

Carlisle (museum title)
J. M. W. Turner (British), watercolor
Yale Center for British Art, United States