The earliest records of Kõljala manor date to 1509. Traces of the oldest construction have been preserved in the cellars, and these date to the 17th century.
In those days the manor belonged to Otto von Poll, a leader of the Saaremaa German nobility. His lifestyle was somewhat different from the rest, and this was reflected in the furnishings of the manor house. Although the house itself was of one-story limestone construction, it is known that the rooms were lit by ten brass chandeliers, the curtains at the windows had golden fringes, and there were twelve large Flemish carpets hung on the walls.
In 1677 the new owner, J. von Osten-Sacken, had two large brass cannons placed in front of the manor. These he had received as a gift from the Swedish king, Karl XI. The cannon were still there at the beginning of the 20th century.
The next extensive reconstruction and building period took place during 1760-1770. Maps and charts dating from 1784 picture the manor very similar to what it looks like today, a single-story building with a hipped roof and three chimneys. In the middle of the 19th century, the new owner F. W. von Buxhoevden added further "improvements" to the building in the form of then-popular classisistic details, such as the portico with four Ionian pillars.
The classisistic style continued in the landscape design that surrounded the manor house. Full-grown, mature trees formed the backdrop for the house, and on the south side among the trees there were placed three arched gate buildings. Unfortunately, only one has survived.
Today Kõljala manor stands in private ownership.
The Peace Palace (Vredespaleis) is an administrative building and often called the seat of international law because it houses the International Court of Justice (which is the principal judicial body of the United Nations), the Permanent Court of Arbitration, the Hague Academy of International Law, and the extensive Peace Palace Library. In addition to hosting these institutions, the Palace is also a regular venue for special events in international policy and law. The Palace officially opened on 28 August 1913, and was originally built to provide a symbolic home for the Permanent Court of Arbitration, a court created to end war which was created by treaty at the 1899 Hague Peace Conference.