St. Olaf's Church is the most dramatic Gothic building in Tallinn's Old Town, its pencil-thin spire soaring above the medieval roofline. The church dates to the 13th century and served Tallinn's Scandinavian merchant community. The tower can be climbed via a narrow spiral staircase for one of the best views over the Old Town's sea of red tile roofs.
The church is active as a Baptist congregation today. The tower is typically open for climbing from April to October. The views from the top encompass the entire Old Town, the port, and the glass towers of the business district — a sharp visual summary of Tallinn's history in one sweep.