A bell tower was also built with the cathedral and windows of opaque, greenish glass.

The cathedral wealth expanded during the 13th and 14th centuries, with bishops imposing taxes on the locals.

Revenues were also collected from local hot springs which were believed to have medicinal value.

On the site, a number of walrus skulls and narwhal were discovered, suggesting that the area near the cathedral included a pagan temple.

In his hands, a crosier made of ashwood and decorated with walrus ivory was discovered and a gold ring on the finger.