- en.advisor.travel poi/Hammershus-172Corfitz Ulfeldt and his wife Leonora Christina were imprisoned in Hammershus 1660–1661, and the fortress was used as a prison on several other occasions.
- medievalconquestpedia.fandom.com wiki/HammershusHammershus is a village initially owned by the Kingdom of Denmark. It located on the northern tip of the Danish island of Bornholm.
- travel.sygic.com en/poi/hammershus-poi:10325Hammershus is a medieval era fortification at Hammeren on the northern tip of the Danish island of Bornholm.
- gezilecekyerler.com hammershus/Baltık Denizi’nde yer alan, Polonya ve İsveç kıyılarına yakın bir ada olan Bornholm’da bulunan Hammershus, 13. yüzyılın başlarında inşa edilmiş tarihi bir yapıdır.
- tr.mgwiki.top wiki/HammershusCorfitz Ulfeldt ve onun eşi Leonora Christina Hammershus 1660-1661'de hapsedildi. 1743'te Hammershus, kale olarak terk edildi.
- 123fakta.com facts-about-hammershusLargest Nordic ruin: Hammershus is the largest castle ruin in Northern Europe and the most popular and visited attraction on Bornholm.
- en-academic.com dic.nsf/enwiki/1707005In 1658, Hammershus was occupied by Swedish forces but a rebellion on the island terminated the Swedish rule.
- wiki2.org en/HammershusHammershus is a medieval era fortification at Hammeren on the northern tip of the Danish island of Bornholm.
- trivago.com.tr tr/opr/hammershus-yakınlarında-…Hammershus yakınında bulunan Allinge-Gudhjem, Danimarka otelleri. 250 rezervasyon sitesi üzerinden ideal otelini ara, karşılaştır ve bul.
- henrikschurmann.dk en/vare/hammershus-2/The castle ruin Hammershus on the on the danish island Bornholm dates from the early 1200s.