Levänluhta is a swampy source known for mysterious prehistoric findings. According archaeological excavations about hundred people have been buried to the former lake of Levänluhta in the Iron Age. Archaeologists have also found several remains of bronze and silver jewelry and tools.
There are remains of buried children, elderly and animals of different ages. The human bones of Levänluhta are dated to the 300-700's. They are historically thought to be sacrificed human victims, but the site can also be an ancient cemetery for people died of starvation or diseases.
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.