Category: fortification
- Fort Putnam
- Martello Tower
- sogenannte Schwedenschanze
- Water Battery
- Anti-tank berm
- Rocca dei Rettori (Fortress of the Rectors)
- Fort Gondran A
- Danewerk
- Qingshankouguan
- Fort Washington
- Tradytor T-8 (w ruinie)
- The ruins of the Mazar Tagh fort
- قلعه باستاني
- Пулемётно-артиллерийский дот № 507
- Mud Fort Kuchesar
- Остатки противотанкового рва
- Ratangarh Fort
- Боевой пещерный каземат
- Форт II Гродненской крепости
- Niemieckie stanowisko dowodzenia obrony przeciwlotniczej z lat 1942-44
- Пулемётный полукапонир № 509
- Fort
- Fort with beacon tower
- Dantapuram (Dantapuri or Danthavarapukota)
- Qinjiatun Fortress
- Fort
- Simian fortress
- Fort
- Xipaotai - Yingkou west fort
- Liujia fort
- Fort
- Tashi fortress
- Anxi (Huancheng) fortress
- Liugong Fortress
- Shibao Fortress
- Shuangjingzi Fortress
- Castello di Calendasco
- Lijiazhai Fort
- Huamen fort
- Xingcheng Fortress
- Site of Middle capital (Junggyeong) of Balhae Kingdom
- Site of Eastern capital (Dongyang) of Balhae Kingdom
- Fort Frederick
- Fort
- Xinhekou fortress
- Dukou fort
- Coast Defense Batteries
- Городище Володчина гора
- Старое Городище
- Городище Воронич
- Fort
- ป้อมโบราณหมายเลข3 (Old Fortification No.3)
- ป้อมโบราณหมายเลข2 (Old Fortification No.2)
- ЖБОТ 8A317