Pühavaimu Kirik (Holy Spirit Church), Tallinn
Tel: 372 644 1487
Concierge.com's insider take:
Situated in Town Hall Square, the Holy Spirit Church is a striking 14th-century Gothic house of worship that's still used by Lutherans today. Look up at the elaborate outdoor clock, the oldest in Tallinn, with carvings dating from 1684—it's one of the most photographed landmarks in town. Inside, intricate wood carvings decorate Baroque pews and a Renaissance-era pulpit. The first Estonian sermons were preached here after the Reformation.
Call ahead for hours.