26 fortresses visited by Luigi Casu

Akhaltsikhe Castle

Alhambra

Ananuri Fortress

Ark

Bahla Fort

Barka Fort

Bergenhus Fortress

Cairo Citadel

Castel dell'Ovo

Castel Sant’Elmo

Castillo de Santa Barbara

Fortress Rabat Hartem

Hohensalzburg Fortress

Khertvisi Fortress

Krak des Chevaliers

Kraków Barbican

Narikala

Olavinlinna

Peter and Paul Fortress

Prague Castle

Rocca Paolina

Sagres Fortress

Spandau Citadel

Suomenlinna

Tower of London

Warsaw Barbican