Krzyżtopór

Lee Castle (South Lanarkshire) John Preston Neale (1780–1847), JP Neale 1830 Lee Place, als gemeinfrei gekennzeichnet, Details auf Wikimedia Commons

Bivona https://www.marinacarmelo.it

Gwydir Castle By Dara Jasumani, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=698279

Porta Esquilina (Rom) Von FlagUploader (User:Panairjdde) - Eigenes Werk, CC SA 1.0, https://commons.wikimedia.org/w/index.php?curid=922010

Normanno (Paternò)

© Antonio Caruso, Creative Commons Attribution-ShareAlike 3.0

Fleckenstein anonym, Fleckenstein, CC BY-SA 3.0

Portgate (Festung)

Neapel (Theater) © History.Travel, Creative Commons Attribution-ShareAlike 3.0

Reußenstein Von Stefan Karl - Eigenes Werk, CC BY-SA 4.0, https://commons.wikimedia.org/w/index.php?curid=41957418

Dalkeith Palace By Benbilgri at en.wikipedia - I personally took this image in January 2004. Transferred from en.wikipedia, Public Domain, https://commons.wikimedia.org/w/index.php?curid=8980158

Rauhlaubenberg Dark Avenger~commonswiki assumed (based on copyright claims)., Burg Rauhlaubenberg 2, CC BY-SA 3.0

Murallas del Castillo

Himera Clemensfranz, Himera Viktoriatempel, CC BY-SA 3.0

Blaubeurer Tor Von MikeAtari - Eigenes Werk, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=12532942

Tandragee Castle Von GreyHobbit, Flickr - https://www.flickr.com/photos/greyhobbit/2747337374/, CC BY-SA 2.0, https://commons.wikimedia.org/w/index.php?curid=11738685

Fondo (Wohnturm) © History.Travel, Creative Commons Attribution-ShareAlike 3.0

Bilstein (Eschwege) Von MacElch (Rainer Kunze), CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=23994213

Eira

Churburg © History.Travel, Creative Commons Attribution-ShareAlike 3.0

High Brunton

Corgarff Castle Von Camer01 - Eigenes Werk, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=5474762

Otranto By Freddyballo - Own work, transferred from it.wikipedia. Original upload date: 7 April 2008, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=3919221