Constitutional court
![Austrian Constitutional Court (Verfassungsgerichtshof VfGH), the oldest constitutional Court in the world, resided in the building of the former Böhmische Hofkanzlei (English: Czech Chancellery), Judenplatz 11 in Vienna until 2012](/Images/godic/202501/04/Boehmische_Hofkanzlei_Vienna_April_2007_0034930.jpg")
![Hall for plenary sessions of the Constitutional Court of the Czech Republic in the building of the former Moravian Parliament in Brno](/Images/godic/202501/04/Moravian_Provincial_Diet_-_Assembly_hall_044930.jpg")
![Bundesverfassungsgericht (BVerfG) in Karlsruhe](/Images/godic/202501/04/Karlsruhe_bundesverfassungsgericht4930.jpg")
![The Constitutional Court of the Russian Federation, established in 1991.](/Images/godic/202501/04/Zdanie_konstitucionnogo_suda4930.jpg")
A constitutional court is a high court that deals primarily with constitutional law. Its main authority is to rule on whether laws that are challenged are in fact unconstitutional, i.e., whether they conflict with constitutionally established rights and freedoms.