Betlehem
Berlinmuren
Akershus_festning
Tower_of_London
Den_kinesiske_muren
Homs
Borg
Eilean_Donan
Bygdeborg
Bymur
Garnison
Hadrianmuren
Kreml_i_Moskva
Akropolis_i_Aten
Kreml
Carcassonne
Bastillen
Alhambra
Drobeta-Turnu_Severin
Citadell
Anleggsarbeid
Den_antoninske_muren
Bosra
Kronborg_slott
Fredriksten
Sveaborg
Nusaybin
Kaserne
Kringsetjinga_av_Leningrad
Bass_Rock
Sjlisselburg
Atlanterhavsmuren
Krak_des_Chevaliers
Ailsa_Craig
Malatya
Staraja_Ladoga
Pa
Zarajsk
Bergenhus_festning
Blokkhus
Château_de_Blois
Stjernefestning
Haakonsvern_Orlogsstasjon
Båhus_festning
Gvardejsk
Castrum_Danorum
Shanhaiguan
Salah_Ed-Din-borga
Olofsborg
Peñón_de_Vélez_de_la_Gomera
Syzran
Lahore_festning
Mannerheimlinja
Porkhov
Kristiansten_festning
Festninga_Louisbourg
London_Wall
Westerplatte
Sinjar
Kystfort
Posad
Dunstable
Parapet
Dunnottar_Castle
Koróni
Martellotårn
Karljohansvern
Akrokorint
Festung_Norwegen
Csesznek
The_Needles
Fjell_festning
Vollgrav
Solovkiklosteret
Fort_McHenry
St_Michael's_Mount
Palamídi
Flat_Holm
Nya_Elfsborg
Cramond_Island
Palisade
Daugavgrīva
Nagoya-jō
Maginotlina
Clifford's_Tower
Fort_Carillon
Kandára-festninga
Stirling_Castle
Făgăraș
Ringmur
Brean_Down
Karýtena
Dublin_Castle
Koznik
Bishop's_Castle
Beeston_Castle
Korela_festning
Toprakkale
Inchgarvie
Vindolanda
Steep_Holm
Hindenburglina
Drake's_Island
Peter-Paulus-festningen
Cleeve_Hill
Walbury_Hill
Hwaseong
Dyngehus_borg
Rosyth_Castle
Vyšehrad
Burry_Holms
Fanári_i_Kardítsa
Krenelering
Ivangorod_festning
Blaker_skanse
Pen_Dinas
Berry_Head
Maiden_Castle_i_Dorset
Borgholms_slott
Îles_Saint-Marcouf
Festninga_i_Mainz
Graviá
Bulbarrow_Hill
Hardknott_Roman_Fort
Thorn_Island
Ludgate
Magnis_i_Carvoran
Cilurnum
Eildon_Hill
Borough_Hill
Kinnaird_Head
Brent_Tor
Milecastle
Dodman_Point
Uqair
Brown_Clee_Hill
Little_Cumbrae_Castle
Long_Mountain_i_Powys
Whitsand_Bay
Bolt_Tail
Foel_Fenlli
Caer_Caradoc
Beacon_Hill_i_Burghclere_i_Hampshire
Cadbury_Hill
Gurnard's_Head
High_Peak_i_Devon
The_Rumps
Sutton_Bank
Totternhoe_Knolls
Beacon_Hill_i_Leicestershire
Wandlebury_Hill
Bredon_Hill