The church, with its twin bell towers and copper dome, was designed by St. Petersburg court architect Luigi Rusca and built in 1820-27. The main iconostasis is from the 19th century and the older ones in aisles from the turn of 17th and 18th centuries. Today the church is used by the Russian Orthodox Parish of Tallinn.
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.