Mustio manor ("Mustio Castle", "Svartå Slott") was built in 1783-1792 by Magnus Linder, the owner of the local ironworks. There had been an older manor from the 17th century, but it was dismantled when the present one was built. The manor represents the neoclassical ("kustavilainen") architecture.
Today Mustio is a countryside hotel. There are also the old ironworks and one of the biggest private historical parks of Finland.
The Walls of Constantinople are a series of defensive stone walls that have surrounded and protected the city of Constantinople (today Istanbul) since its founding as the new capital of the Roman Empire by Constantine the Great. With numerous additions and modifications during their history, they were the last great fortification system of antiquity, and one of the most complex and elaborate systems ever built. They were also the largest and strongest fortification in both the ancient and medieval world.
Initially built by Constantine the Great, the walls surrounded the new city on all sides, protecting it against attack from both sea and land. As the city grew, the famous double line of the Theodosian Walls was built in the 5th century. Although the other sections of the walls were less elaborate, they were, when well-manned, almost impregnable for any medieval besieger.