Steinvikholm Castle

Steinvikholm Castle is an island fortress on the Skatval peninsula in Stjørdal Municipality, Trøndelag, Norway. Raised between 1525 and 1532, it is regarded as the largest construction of the Norwegian Middle Ages. Today it stands as an atmospheric, well-preserved ruin and one of the more rewarding historical stops in central Norway.

Who built Steinvikholm Castle, and why?

The fortress was commissioned by Olav Engelbrektsson, the last Roman Catholic archbishop of Norway. Work began after he returned from a meeting with the Pope in Rome and lasted seven years. The castle was meant to serve as both a residence and a stronghold. Its walls cover roughly half of the rocky island, which gives a sense of how ambitious the project was.

What was daily life on the island like?

The island has no spring, so fresh water had to be carried over from the mainland. Apart from boats, the only way across was a wooden bridge. That isolation made the castle hard to attack, but it also made everyday supply a challenge.

What happened in 1537?

During the Reformation, Engelbrektsson found himself at odds with the Danish crown and the Protestant cause. In April 1537, Protestant forces led by the nobleman Tord Roed began a siege and blockaded the fjord from the sea. The defenders, under the Catholic deacon Knud Pederson Skanke, fired their cannons at the besiegers day and night and turned down several calls to surrender. The castle finally gave in on 17 May 1537.

The archbishop had already fled to the Netherlands, where he died in 1538. He left behind St. Olav's shrine and other treasures from Nidaros Cathedral. The original coffin holding the saint's body stayed at Steinvikholm until 1564, when it went back to Nidaros Cathedral in Trondheim.

What became of the castle afterwards?

From the 17th to the 19th century the island served as a quarry, and some of the masonry was sold and carted away. The ruin was excavated and conserved between 1894 and 1900, giving it the form visitors see today. For many years an outdoor opera about Olav Engelbrektsson was staged here as well.

Is Steinvikholm Castle worth visiting?

It is, especially if you enjoy medieval Scandinavian history, the story of the Reformation, or simply dramatic castles surrounded by water. The site lies along the St. Olav's Way (Olavsleden), so it also draws walkers heading for Trondheim. Opening times and access rules vary by season, so check with the site operator before you go.

Frequently asked questions

Where is Steinvikholm Castle? On an island by the Skatval peninsula in Stjørdal Municipality, Trøndelag, Norway.

When was it built? Between 1525 and 1532, over seven years.

Who built it? Olav Engelbrektsson, Norway's last Catholic archbishop.

When did the castle surrender? On 17 May 1537, after a siege by Protestant forces that began in April.

Is it an original ruin? Yes. It is a ruin that was excavated and conserved in 1894–1900, not a full reconstruction.

Is it on a hiking route? Yes, it lies on the St. Olav's Way pilgrim route.