The Classicist main building of the Õisu Manor was built at the turn of the 18th and 19th centuries. The wide and high parade staircase with sculptures of white marble makes the mansion impressive; one of the sculptures is a Protege of Home, the other one symbolizes Power. Many outbuildings belong to the Manor Ensemble, of which one of the most interesting one is the so-called "wry stable". There is an English-style park, one of the first in Estonia, behind the main building.
There has been a Õisu dairy school since 1922. At present school provides training in dairy work and other branches of food processing.
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.