Västerås Domkyrka is a red-brick Gothic cathedral that has dominated the city skyline since the 13th century. The current building dates mostly from the 14th and 15th centuries, with a tower added in the 19th century that makes it visible from the lake. Inside, the vaulted nave is lined with centuries of monuments, royal tombs, and carved details accumulated over seven hundred years of continuous use.
The cathedral is the seat of the Diocese of Västerås, one of Sweden's oldest sees. Among the highlights inside is the tomb of King Erik XIV, the elaborate 16th-century triptych altarpiece, and the medieval wall paintings that survived the Reformation. The tower can be climbed in summer for views over the old town and Lake Mälaren. Entry to the cathedral is free.