Sankt Olofs kyrkoruin

Sankt Olofs kyrkoruin is a medieval stone church in ruins in Sigtuna with walls still standing several meters high. The remains show a central tower, choir, and transept that reflect the traditional layout of a medieval church.

Archaeological excavations in 2005 uncovered foundation walls of an earlier stone church beneath the current ruins from the mid-11th century. This discovery shows that a particularly early church foundation took place at this site.

The site honors Saint Olav, a Norwegian king whose veneration spread across Scandinavia during medieval times. Visitors can still see a spring near the ruins that locals have long associated with healing properties.

The site is open throughout the year without entrance fees and can be visited freely. Information panels on-site explain the architectural features and the site's history.

The church ranks among the oldest stone churches in Nordic countries and displays construction techniques typical of the 11th century. This early building method sets it apart from later medieval structures in the region.