The Gibralfaro: The Most Spectacular Views in Malaga

Formidable fortresses - 20 imposing castles

Fortresses and Defense Walls - Crystalinks

Hohensalzburg Fortress

There's just something satisfying about completing an aboveground fort : r/dwarffortress

The City Walls, Fortifications and Fortresses of Kotor - Euscentia

Candia (Iraklion), a Venetian fortress in Greece

Visit Dalmatia Šibenik - Barone Fortress was built in 1646 on Vidakuša, the 80 meter-high hill above the city. Along with the other three fortresses in Šibenik, it represents a unique defence

42 Most Beautiful Castles in the World - Global Viewpoint

Fortress from Ottoman, Byzantine eras to become Istanbul's most glamorous cultural venue

Suwon, South Korea: Impressive fortress is like a mini Great Wall