This small church on Rüütli street has been the spiritual home for generations of Estonian Swedes, an ethnic group that's been present in Tallinn since the Middle Ages. The location had originally been an almshouse for the city's poor, but in 1733 the tsarist government gave it to the Swedish congregation, which been left without its own church since the Great Northern War.
During Soviet times the building was converted into a sports hall and fell into disrepair, but was renovated and reconsecrated in 2002. It now has a congregation of around 200, and continues to hold services in Swedish. In addition to its Baroque altar by Joachim Armbrust and a Baroque pulpit, the church has a unique baptistery created by famed sculptor Christian Ackermann in 1680.
References:Duino Castle was built by the Wallsee family in 1389 on the cliffs overlooking the Gulf of Trieste. It replaced an older castle from the 11th century. Over time, the Wallsee family disappeared and the castle, after having been used as a prison, became the residence of the Luogar and Hofer.
At the end of the 19th century it became the property of Prince Alexander von Thurn und Taxis from the Czech branch of the House of Thurn and Taxis. It remains with the family to this day with his great-grandson Prince Carlo Alessandro della Torre e Tasso, Duke of Castel Duino the current owner. The castle has been opened to the public as a museum and park.