🇩🇰 Denmark · Fortress
Borgring
Borgring (older spelling Borrering) also known as Vallø Borgring, is a Danish Viking ring fortress located near Køge on the island of Zealand.
🇩🇰 Denmark · Fortress
Gamleborg
Gamleborg, also known as Gamleborg Viking Fortress, was the first fortification on the Danish island of Bornholm.
🇩🇰 Denmark · Fortress
Hammershus
High–Late Medieval Bornholm 1259–1658 (Lund Archbishop Danish struggle) · Medieval Bornholm (Lund Archbishop vs Danish crown, Hammershus feud 1259)
Hammershus — largest medieval fortress ruin in Scandinavia (c.1259 Archbishop Jacob Erlandsen, Lund–Danish struggle 13th c) on Hammeren granite promontory 74 m a.s.l.