Category: fortification
- Georges Island National Historic Site of Canada
- York Redoubt National Historic Site
- Torre Lapillo
- Chapel Bay Fort
- Fort McNab National Historic Site
- Fort Ives
- York Shore Battery
- Connaught Battery
- Hugonin Battery
- Fort Mont-Dauphin
- Fort Ogilvie
- Northwest Arm Battery
- Point Pleasant Battery
- Cambridge Battery
- Old Chain Rock Battery
- South Battery
- Practice Battery
- Sandwich Point Battery
- Riga Citadel
- Strawberry Battery
- Menshikov bastion
- Gosudarev bastion
- Torre dell'Argentiera
- Forte Filippo
- Forte Santa Caterina
- Forte Stella
- Torre Ciana
- Кавальер Анны Иоанновны (Аннинский)
- Alekseyevsky demilune
- Ancient fortress near Qadori pass
- Tiszavasvári - Református templom
- מצד חתרורים
- Matsad Bokek
- York Redoubt Battery - Gun emplacements
- Vallo Alpino - Caposaldo Mulattiera - Ricovero III
- Vallo Alpino - Caposaldo Mulattiera - Centro 2
- Vallo Alpino - Caposaldo Mulattiera - Centro 1 bis
- Gun Emplacement No 1, magazine and crew shelter
- Gun Emplacement No 2
- Gun Emplacements No 3 and 4
- Vallo Alpino - Caposaldo Acles - Centro 32
- Torretta metallica del Centro 32 (scalzata dalla sede)
- Vallo Alpino - Caposaldo Acles - Centro 33
- Torretta metallica del Centro 33 (scalzata dalla sede)
- Vallo Alpino - Caposaldo Acles - Postazione 33 bis
- Vallo Alpino - Caposaldo Acles - Postazione 33 a.c.
- Vallo Alpino - Caposaldo Acles - Postazione 32 bis
- Verdedigingswerk te Vreeswijk
- La Tarsinata e la ex Chiesa di S.Antimo sopra ai Canali
- Székesfehérvár-Feketehegy - földvár maradványai
- Крепост
- La Rocca Aldobrandesca