The first wooden church of Kambja was built probably in the beginning of the 14th century. Churches were destroyed and rebuilt several times during centuries. The present Lutheran St. Martin’s Church was originally rebuilt in 1720, this time of stone and a transept was added to the old part in 1874. After World War II, the church, which is one of the biggest in Southern Estonia, was in ruins for many years until restoration began in 1989. The old bells which were cast in Moscow have survived. A new organ was donated by the Träsiövi congregation of Sweden.
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.